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Costa Rica’s national health service was hacked sometime earlier this morning by a Russian ransomware group known as Hive. The intrusion comes just weeks after Costa Rican President Rodrigo Chaves declared a state of emergency in response to a data ransom attack from a different Russian ransomware gang — Conti. Ransomware experts say there is good reason to believe the same cybercriminals are behind both attacks, and that Hive has been helping Conti rebrand and evade international sanctions targeting extortion payouts to cybercriminals operating in Russia.
The Costa Rican publication CRprensa.com reports that affected systems at the Costa Rican Social Security Fund (CCSS) were taken offline on the morning of May 31, but that the extent of the breach was still unclear. The CCSS is responsible for Costa Rica’s public health sector, and worker and employer contributions are mandated by law.
A hand-written sign posted outside a public health center in Costa Rica today explained that all systems are down until further notice (thanks to @Xyb3rb3nd3r for sharing this photo).
A hand-written notice posted outside a public health clinic today in Costa Rica warned of system outages due to a cyberattack on the nation’s healthcare systems. The message reads: “Dear Users: We would like to inform you that due a problem related to the information systems of the institution, we are unable to expend any medicine prescriptions today until further notice. Thank you for your understanding- The pharmacy.”
Esteban Jimenez, founder of the Costa Rican cybersecurity consultancy ATTI Cyber, told KrebsOnSecurity the CCSS suffered a cyber attack that compromised the Unique Digital Medical File (EDUS) and the National Prescriptions System for the public pharmacies, and as a result medical centers have turned to paper forms and manual contingencies.
“Many smaller health centers located in rural areas have been forced to close due to not having the required equipment or communication with their respective central health areas and the National Retirement Fund (IVM) was completely blocked,” Jimenez said. “Taking into account that salaries of around fifty thousand employees and deposits for retired citizens were due today, so now the payments are in danger.”
Jimenez said the head of the CCSS has addressed the local media, confirming that the Hive ransomware was deployed on at least 30 out of 1,500 government servers, and that any estimation of time to recovery remains unknown. He added that many printers within the government agency this morning began churning out copies of the Hive ransom note.
Printers at the Costa Rican government health ministry went crazy this morning after the Hive ransomware group attacked. Image: Esteban Jimenez.
“HIVE has not yet released their ransom fee but attacks are expected to follow, other organizations are trying to get a hold on the emergency declaration to obtain additional funds to purchase new pieces of infrastructure, improve their backup structure amongst others,” Jimenez said.
A copy of the ransom note left behind by the intruders and subsequently uploaded to Virustotal.com indicates the CCSS intrusion was the work of Hive, which typically demands payment for a digital key needed to unlock files and servers compromised by the group’s ransomware.
A HIVE ransomware chat page for a specific victim (redacted).
On May 8, President Chaves used his first day in office to declare a national state of emergency after the Conti ransomware group threatened to publish gigabytes of sensitive data stolen from Costa Rica’s Ministry of Finance and other government agencies. Conti initially demanded $10 million, and later doubled the amount when Costa Rica refused to pay. On May 20, Conti leaked more than 670 gigabytes of data taken from Costa Rican government servers.
As CyberScoop reported on May 17, Chaves told local media he believed that collaborators within Costa Rica were helping Conti extort the government. Chaves offered no information to support this claim, but the timeline of Conti’s descent on Costa Rica is worth examining.
Most of Conti’s public communications about the Costa Rica attack have very clearly assigned credit for the intrusion to an individual or group calling itself “unc1756.” In March 2022, a new user by the same name registered on the Russian language crime forum Exploit.
A message Conti posted to its dark web blog on May 20.
On the evening of April 18, Costa Rica’s Ministry of Finance disclosed the Conti intrusion via Twitter. Earlier that same day, the user unc1756 posted a help wanted ad on Exploit saying they were looking to buy access to “special networks” in Costa Rica.
“By special networks I mean something like Haciendas,” unc1756 wrote on Exploit. Costa Rica’s Ministry of Finance is known in Spanish as the “Ministerio Hacienda de Costa Rica.” Unc1756 said they would pay $USD 500 or more for such access, and would work only with Russian-speaking people.
Experts say there are clues to suggest Conti and Hive are working together in their attacks on Costa Rica, and that the intrusions are tied to a rebranding effort by Conti. Shortly after Russia invaded Ukraine at the end of February, Conti declared its full support, aligning itself directly with Russia and against anyone who would stand against the motherland.
Conti’s threatening message this week regarding international interference in Ukraine.
Conti quickly deleted the declaration from its website, but the damage had already been done, and any favor or esteem that Conti had earned among the Ukrainian cybercriminal underground effectively evaporated overnight.
Shortly thereafter, a Ukrainian security expert leaked many months worth of internal chat records between Conti personnel as they plotted and executed attacks against hundreds of victim organizations. Those candid messages exposed what it’s like to work for Conti, how they undermined the security of their targets, as well as how the group’s leaders strategized for the upper hand in ransom negotiations.
But Conti’s declaration of solidarity with the Kremlin also made it increasingly ineffective as an instrument of financial extortion. According to cyber intelligence firm ADVIntel, Conti’s alliance with the Russian state soon left it largely unable to receive ransom payments because victim companies are being advised that paying a Conti ransom demand could mean violating U.S. economic sanctions on Russia.
“Conti as a brand became associated with the Russian state — a state that is currently undergoing extreme sanctions,” ADVIntel wrote in a lengthy analysis (PDF). “In the eyes of the state, each ransom payment going to Conti may have potentially gone to an individual under sanction, turning simple data extortion into a violation of OFAC regulation and sanction policies against Russia.”
Conti is by far the most aggressive and profitable ransomware group in operation today. Image: Chainalysis
ADVIntel says it first learned of Conti’s intrusion into Costa Rican government systems on April 14, and that it has seen internal Conti communications indicating that getting paid in the Costa Rica attack was not the goal.
Rather, ADVIntel argues, Conti was simply using it as a way to appear publicly that it was still operating as the world’s most lucrative ransomware collective, when in reality the core Conti leadership was busy dismantling the crime group and folding themselves and top affiliates into other ransomware groups that are already on friendly terms with Conti.
“The only goal Conti had wanted to meet with this final attack was to use the platform as a tool of publicity, performing their own death and subsequent rebirth in the most plausible way it could have been conceived,” ADVIntel concluded.
ADVIntel says Conti’s leaders and core affiliates are dispersing to several Conti-loyal crime collectives that use either ransomware lockers or strictly engage in data theft for ransom, including AlphV/BlackCat, AvosLocker, BlackByte, HelloKitty, Hive, and Karakurt.
Still, Hive appears to be perhaps the biggest beneficiary of any attrition from Conti: Twice over the past week, both Conti and Hive claimed responsibility for hacking the same companies. When the discrepancy was called out on Twitter, Hive updated its website to claim it was not affiliated with Conti.
Conti and Hive’s Costa Rican exploits mark the latest in a string of recent cyberattacks against government targets across Latin America. Around the same time it hacked Costa Rica in April, Conti announced it had hacked Peru’s National Directorate of Intelligence, threatening to publish sensitive stolen data if the government did not pay a ransom.
But Conti and Hive are not alone in targeting Latin American victims of late. According to data gathered from the victim shaming blogs maintained by multiple ransomware groups, over the past 90 days ransom actors have hacked and sought to extort 15 government agencies in Brazil, nine in Argentina, six in Colombia, four in Ecuador and three in Chile.
A recent report (PDF) by the Inter-American Development Bank suggests many Latin American countries lack the technical expertise or cybercrime laws to deal with today’s threats and threat actors.
“This study shows that the Latin American and Caribbean (LAC) region is not sufficiently prepared to handle cyberattacks,” the IADB document explains. “Only 7 of the 32 countries studied have a critical infrastructure protection plan, while 20 have established cybersecurity incident response teams, often called CERTs or CSIRTs. This limits their ability to identify and respond to attacks.”
Authorities in the United States, Germany, the Netherlands and the U.K. last week said they dismantled the “RSOCKS” botnet, a collection of millions of hacked devices that were sold as “proxies” to cybercriminals looking for ways to route their malicious traffic through someone else’s computer. While the coordinated action did not name the Russian hackers allegedly behind RSOCKS, KrebsOnSecurity has identified its owner as a 35-year-old Russian man living abroad who also runs the world’s top spam forum.
The RUSdot mailer, the email spamming tool made and sold by the administrator of RSOCKS.
According to a statement by the U.S. Department of Justice, RSOCKS offered clients access to IP addresses assigned to devices that had been hacked:
“A cybercriminal who wanted to utilize the RSOCKS platform could use a web browser to navigate to a web-based ‘storefront’ (i.e., a public web site that allows users to purchase access to the botnet), which allowed the customer to pay to rent access to a pool of proxies for a specified daily, weekly, or monthly time period. The cost for access to a pool of RSOCKS proxies ranged from $30 per day for access to 2,000 proxies to $200 per day for access to 90,000 proxies.”
The DOJ’s statement doesn’t mention that RSOCKS has been in operation since 2014, when access to the web store for the botnet was first advertised on multiple Russian-language cybercrime forums.
The user “RSOCKS” on the Russian crime forum Verified changed his name to RSOCKS from a previous handle: “Stanx,” whose very first sales thread on Verified in 2016 quickly ran afoul of the forum’s rules and prompted a public chastisement by the forum’s administrator.
Verified was hacked twice in the past few years, and each time the private messages of all users on the forum were leaked. Those messages show that after being warned of his forum infraction, Stanx sent a private message to the Verified administrator detailing his cybercriminal bona fides.
“I am the owner of the RUSdot forum (former Spamdot),” Stanx wrote in Sept. 2016. “In spam topics, people know me as a reliable person.”
A Google-translated version of the Rusdot spam forum.
RUSdot is the successor forum to Spamdot, a far more secretive and restricted forum where most of the world’s top spammers, virus writers and cybercriminals collaborated for years before the community’s implosion in 2010. Even today, the RUSdot Mailer is advertised for sale at the top of the RUSdot community forum.
Stanx said he was a longtime member of several major forums, including the Russian hacker forum Antichat (since 2005), and the Russian crime forum Exploit (since April 2013). In an early post to Antichat in January 2005, Stanx disclosed that he is from Omsk, a large city in the Siberian region of Russia.
According to the cyber intelligence firm Intel 471, the user Stanx indeed registered on Exploit in 2013, using the email address stanx@rusdot.com, and the ICQ number 399611. A search in Google for that ICQ number turns up a cached version of a Vkontakte profile for a Denis “Neo” Kloster, from Omsk, Russia.
Cybersecurity firm Constella Intelligence shows that in 2017, someone using the email address istanx@gmail.com registered at the Russian freelancer job site fl.ru with the profile name of “Denis Kloster” and the Omsk phone number of 79136334444. Another record indexed by Constella suggests Denis’s real surname may in fact be “Emilyantsev” [Емельянцев].
That phone number is tied to the WHOIS registration records for multiple domain names over the years, including proxy[.]info, allproxy[.]info, kloster.pro and deniskloster.com.
A copy of the passport for Denis Kloster, as posted to his Vkontakte page in 2019. It shows that in Oct. 2019, he obtained a visa from the American Embassy in Bangkok, Thailand.
The “about me” section of DenisKloster.com says the 35-year-old was born in Omsk, that he got his first computer at age 12, and graduated from high school at 16. Kloster says he’s worked in many large companies in Omsk as a system administrator, web developer and photographer.
According to Kloster’s blog, his first real job was running an “online advertising” firm he founded called Internet Advertising Omsk (“riOmsk“), and that he even lived in New York City for a while.
“Something new was required and I decided to leave Omsk and try to live in the States,” Kloster wrote in 2013. “I opened an American visa for myself, it was not difficult to get. And so I moved to live in New York, the largest city in the world, in a country where all wishes come true. But even this was not enough for me, and since then I began to travel the world.”
The current version of the About Me page on Kloster’s site says he closed his advertising business in 2013 to travel the world and focus on his new company: One that provides security and anonymity services to customers around the world. Kloster’s vanity website and LinkedIn page both list him as CEO of a company called “SL MobPartners.”
In 2016, Deniskloster.com featured a post celebrating three years in operation. The anniversary post said Kloster’s anonymity business had grown to nearly two dozen employees, most of whom were included in a group photo posted to that article (and some of whom Kloster thanked by their first names and last initials).
The employees who kept things running for RSOCKS, circa 2016.
“Thanks to you, we are now developing in the field of information security and anonymity!,” the post enthuses. “We make products that are used by thousands of people around the world, and this is very cool! And this is just the beginning!!! We don’t just work together and we’re not just friends, we’re Family.”
Mr. Kloster did not respond to repeated requests for comment.
It’s not clear if the coordinated takedown targeting the RSOCKS botnet will be permanent, as the botnet’s owners could simply rebuild — and possibly rebrand — their crime machine. Based on the RSOCKS owner’s posts, that is exactly what they intend to do.
“RSocks ceases to exist,” wrote the Rsocks account on the BlackHatWorld forum on June 17. “But don’t worry. All the active plans and fund balances will be transferred to another service. Stay tuned. We will inform you about its name and all the details later.”
Rsocks told the BlackHatWorld community they would be back soon under a new name.
Malware-based proxy services like RSOCKS have struggled to remain competitive in a cybercrime market with increasingly sophisticated proxy services that offer many additional features. The demise of RSOCKS follows closely on the heels of VIP72[.]com, a competing proxy botnet service that operated for a decade before its owners pulled the plug on the service last year.
Microsoft today released updates to fix at least 86 security vulnerabilities in its Windows operating systems and other software, including a weakness in all supported versions of Windows that Microsoft warns is actively being exploited. The software giant also has made a controversial decision to put the brakes on a plan to block macros in Office documents downloaded from the Internet.
In February, security experts hailed Microsoft’s decision to block VBA macros in all documents downloaded from the Internet. The company said it would roll out the changes in stages between April and June 2022.
Macros have long been a trusted way for cybercrooks to trick people into running malicious code. Microsoft Office by default warns users that enabling macros in untrusted documents is a security risk, but those warnings can be easily disabled with the click of button. Under Microsoft’s plan, the new warnings provided no such way to enable the macros.
As Ars Technica veteran reporter Dan Goodin put it, “security professionals—some who have spent the past two decades watching clients and employees get infected with ransomware, wipers, and espionage with frustrating regularity—cheered the change.”
But last week, Microsoft abruptly changed course. As first reported by BleepingComputer, Redmond said it would roll back the changes based on feedback from users.
“While Microsoft has not shared the negative feedback that led to the rollback of this change, users have reported that they are unable to find the Unblock button to remove the Mark-of-the-Web from downloaded files, making it impossible to enable macros,” Bleeping’s Sergiu Gatlan wrote.
Microsoft later said the decision to roll back turning off macros by default was temporary, although it has not indicated when this important change might be made for good.
The zero-day Windows vulnerability already seeing active attacks is CVE-2022-22047, which is an elevation of privilege vulnerability in all supported versions of Windows. Trend Micro’s Zero Day Initiative notes that while this bug is listed as being under active attack, there’s no information from Microsoft on where or how widely it is being exploited.
“The vulnerability allows an attacker to execute code as SYSTEM, provided they can execute other code on the target,” ZDI’s Dustin Childs wrote. “Bugs of this type are typically paired with a code execution bug, usually a specially crafted Office or Adobe document, to take over a system. These attacks often rely on macros, which is why so many were disheartened to hear Microsoft’s delay in blocking all Office macros by default.”
Kevin Breen, director of cyber threat research at Immersive Labs, said CVE-2022-22047 is the kind of vulnerability that is typically seen abused after a target has already been compromised.
“Crucially, it allows the attacker to escalate their permissions from that of a normal user to the same permissions as the SYSTEM,” he said. “With this level of access, the attackers are able to disable local services such as Endpoint Detection and Security tools. With SYSTEM access they can also deploy tools like Mimikatz which can be used to recover even more admin and domain level accounts, spreading the threat quickly.”
After a brief reprieve from patching serious security problems in the Windows Print Spooler service, we are back to business as usual. July’s patch batch contains fixes for four separate elevation of privilege vulnerabilities in Windows Print Spooler, identified as CVE-2022-22022, CVE-2022-22041, CVE-2022-30206, and CVE-2022-30226. Experts at security firm Tenable note that these four flaws provide attackers with the ability to delete files or gain SYSTEM level privileges on a vulnerable system.
Roughly a third of the patches issued today involve weaknesses in Microsoft’s Azure Site Recovery offering. Other components seeing updates this month include Microsoft Defender for Endpoint; Microsoft Edge (Chromium-based); Office; Windows BitLocker; Windows Hyper-V; Skype for Business and Microsoft Lync; and Xbox.
Four of the flaws fixed this month address vulnerabilities Microsoft rates “critical,” meaning they could be used by malware or malcontents to assume remote control over unpatched Windows systems, usually without any help from users. CVE-2022-22029 and CVE-2022-22039 affect Network File System (NFS) servers, and CVE-2022-22038 affects the Remote Procedure Call (RPC) runtime.
“Although all three of these will be relatively tricky for attackers to exploit due to the amount of sustained data that needs to be transmitted, administrators should patch sooner rather than later,” said Greg Wiseman, product manager at Rapid7. “CVE-2022-30221 supposedly affects the Windows Graphics Component, though Microsoft’s FAQ indicates that exploitation requires users to access a malicious RDP server.”
Separately, Adobe today issued patches to address at least 27 vulnerabilities across multiple products, including Acrobat and Reader, Photoshop, RoboHelp, and Adobe Character Animator.
For a closer look at the patches released by Microsoft today and indexed by severity and other metrics, check out the always-useful Patch Tuesday roundup from the SANS Internet Storm Center. And it’s not a bad idea to hold off updating for a few days until Microsoft works out any kinks in the updates: AskWoody.com usually has the lowdown on any patches that may be causing problems for Windows users.
As always, please consider backing up your system or at least your important documents and data before applying system updates. And if you run into any problems with these updates, please drop a note about it here in the comments.
The 911 service as it exists today.
For the past seven years, an online service known as 911 has sold access to hundreds of thousands of Microsoft Windows computers daily, allowing customers to route their Internet traffic through PCs in virtually any country or city around the globe — but predominantly in the United States. 911 says its network is made up entirely of users who voluntarily install its “free VPN” software. But new research shows the proxy service has a long history of purchasing installations via shady “pay-per-install” affiliate marketing schemes, some of which 911 operated on its own.
911[.]re is one of the original “residential proxy” networks, which allow someone to rent a residential IP address to use as a relay for his/her Internet communications, providing anonymity and the advantage of being perceived as a residential user surfing the web.
From a website’s perspective, the IP traffic of a residential proxy network user appears to originate from the rented residential IP address, not from the proxy service customer. These services can be used in a legitimate manner for several business purposes — such as price comparisons or sales intelligence — but they are massively abused for hiding cybercrime activity because they can make it difficult to trace malicious traffic to its original source.
Residential proxy services are often marketed to people seeking the ability to evade country-specific blocking by the major movie and media streaming providers. But some of them — like 911 — build their networks in part by offering “free VPN” or “free proxy” services that are powered by software which turns the user’s PC into a traffic relay for other users. In this scenario, users indeed get to use a free VPN service, but they are often unaware that doing so will turn their computer into a proxy that lets others use their Internet address to transact online.
The current prices for 911’s proxies.
Researchers at the University of Sherbrooke in Canada recently published an analysis of 911, and found there were roughly 120,000 PCs for rent via the service, with the largest number of them located in the United States.
“The 911[.]re network uses at least two free VPN services to lure its users to install a malware-like software that achieves persistence on the user’s computer,” the researchers wrote. “During the research we identified two free VPN services that [use] a subterfuge to lure users to install software that looks legitimate but makes them part of the network. These two software are currently unknown to most if not all antivirus companies.”
A depiction of the Proxygate service. Image: University of Sherbrooke.
The researchers concluded that 911 is supported by a “mid scale botnet-like infrastructure that operates in several networks, such as corporate, government and critical infrastructure.” The Canadian team said they found many of the 911 nodes available for rent were situated within several major US-based universities and colleges, critical infrastructures such as clean water, defense contractors, law enforcement and government networks.
Highlighting the risk that 911 nodes could pose to internal corporate networks, they observed that “the infection of a node enables the 911.re user to access shared resources on the network such as local intranet portals or other services.”
“It also enables the end user to probe the LAN network of the infected node,” the paper continues. “Using the internal router, it would be possible to poison the DNS cache of the LAN router of the infected node, enabling further attacks.”
The 911 user interface, as it existed when the service first launched in 2016.
A review of the clues left behind by 911’s early days on the Internet paint a more complete picture of this long-running proxy network. The domain names used by 911 over the years have a few common elements in their original WHOIS registration records, including the address ustraffic@qq.com and a Yunhe Wang from Beijing.
That ustraffic email is tied to a small number of interesting domains, including browsingguard[.]com, cleantraffic[.]net, execlean[.]net, proxygate[.]net, and flashupdate[.]net.
A cached copy of flashupdate[.]net available at the Wayback Machine shows that in 2016 this domain was used for the “ExE Bucks” affiliate program, a pay-per-install business which catered to people already running large collections of hacked computers or compromised websites. Affiliates were paid a set amount for each installation of the software, with higher commissions for installs in more desirable nations, particularly Europe, Canada and the United States.
“We load only one software — it’s a Socks5 proxy program,” read the message to ExE Bucks affiliates. The website said affiliates were free to spread the proxy software by any means available (i.e. “all promotion methods allowed”). The website’s copyright suggests the ExE Bucks affiliate program dates back to 2012.
A cached copy of flashupdate[.]net circa 2016, which shows it was the home of a pay-per-install affiliate program that incentivized the silent installation of its software. “FUD” in the ad above refers to software and download links that are “Fully UnDetectable” as suspicious or malicious by all antivirus software.
Another domain tied to the ustraffic@qq.com email in 2016 was ExeClean[.]net, a service that advertised to cybercriminals seeking to obfuscate their malicious software so that it goes undetected by all or at least most of the major antivirus products on the market.
“Our technology ensures the maximum security from reverse engineering and antivirus detections,” ExEClean promised.
The Exe Clean service made malware look like goodware to antivirus products.
Yet another domain connected to the ustraffic email is p2pshare[.]net, which advertised “free unlimited internet file-sharing platform” for those who agreed to install their software.
p2pshare.net, which bundled 911 proxy with an application that promised access to free unlimited internet file-sharing.
Still more domains associated with ustraffic@qq.com suggest 911’s proxy has been disguised as security updates for video player plugins, including flashplayerupdate[.]xyz, mediaplayerupdate[.]xyz, and videoplayerupdate[.]xyz.
The earliest version of the 911 website available from the Wayback Machine is from 2016. A sister service called proxygate[.]net launched roughly a year prior to 911 as a “free” public test of the budding new residential proxy service. “Basically using clients to route for everyone,” was how Proxygate described itself in 2016.
For more than a year after its founding, the 911 website was written entirely in Simplified Chinese. The service has only ever accepted payment via virtual currencies such as Bitcoin and Monero, as well as Alipay and China UnionPay, both payment platforms based in China.
Initially, the terms and conditions of 911’s “End User License Agreement (EULA) named a company called Wugaa Enterprises LLC, which was registered in California in 2016. Records from the California Secretary of State office show that in November 2016, Wugaa Enterprises said it was in the Internet advertising business, and had named as its CEO as one Nicolae Aurelian Mazgarean of Brasov, Romania.
A search of European VAT numbers shows the same Brasov, RO address tied to an enterprise called PPC Leads SRL (in the context of affiliate-based marketing, “PPC” generally refers to the term “pay-per-click”).
911’s EULA would later change its company name and address in 2017, to International Media Ltd. in the British Virgin Islands. That is the same information currently displayed on the 911 website.
The EULA attached to 911 software downloaded from browsingguard[.]com (tied to the same ustraffic@qq email that registered 911) references a company called Gold Click Limited. According to the UK Companies House, Gold Click Limited was registered in 2016 to a 34-year-old Yunhe Wang from Beijing City. Many of the WHOIS records for the above mentioned domains also include the name Yunhe Wang, or some variation thereof.
In a response to questions from KrebsOnSecurity, 911 said the researchers were wrong, and that 911 has nothing to do with any of the other domains mentioned above.
“We have 911 SDK link and how it works described clearly in the “Terms of use” of affiliated partners products, and we have details of how the community powered network works on our webpages,” read an email response.
“Besides that, for protecting the end users, we banned many domains’ access and blocked the vulnerable ports, e.g. spamming emails, and torrent is not possible from the 911 network,” the reply continued. “Same as scanning and many others…Accessing to the Lan network and router is also blocked. We are monitoring 911 user’s account closely, once any abnormal behavior detected, we suspend the user’s account right away.”
911 has remained one of the most popular services among denizens of the cybercrime underground for years, becoming almost shorthand for connecting to that “last mile” of cybercrime. Namely, the ability to route one’s malicious traffic through a computer that is geographically close to the consumer whose credit card they’re about to charge at some website, or whose bank account they’re about to empty.
Given the frequency with which 911 has been praised by cybercrooks on the top forums, it was odd to find the proprietors of 911 do not appear to have created any official support account for the service on any of several dozen forums reviewed by this author going back a decade. However there are two cybercriminal identities on the forums that have responded to individual 911 help requests, and who promoted the sale of 911 accounts via their handles.
Both of these identities were active on the crime forum fl.l33t[.]su between 2016 and 2019. The user “Transfer” advertised and sold access to 911 from 2016 to 2018, amid many sales threads where they advertised expensive electronics and other consumer goods that were bought online with stolen credit cards.
In a 2017 discussion on fl.l33t[.]su, the user who picked the handle “527865713” could be seen answering private messages in response to help inquiries seeking someone at 911. That identity is tied to an individual who for years advertised the ability to receive and relay large wire transfers from China.
One ad from this user in 2016 offered a “China wire service” focusing on Western Union payments, where “all transfers are accepted in China.” The service charged 20 percent of all “scam wires,” unauthorized wire transfers resulting from bank account takeovers or scams like CEO impersonation schemes.
In August 2021, 911’s biggest competitor — a 15-year-old proxy network built on malware-compromised PCs called VIP72 — abruptly closed up shop. Almost overnight, an overwhelming number of former VIP72 customers began shifting their proxy activities to 911.
The login page for VIP72, until recently 911’s largest competitor.
That’s according to Riley Kilmer, co-founder of Spur.us — a security company that monitors anonymity services. Kilmer said 911 also gained an influx of new customers after the Jan. 2022 closure of LuxSocks, another malware-based proxy network.
“911’s user base skyrocketed after VIP72 and then LuxSocks went away,” Kilmer said. “And it’s not hard to see why. 911 and VIP72 are both Windows-based apps that operate in a similar way, where you buy private access to IPs.”
Kilmer said 911 is interesting because it appears to be based in China, while nearly all of the other major proxy networks are Russian-backed or Russian-based.
“They have two basic methods to get new IPs,” Kilmer said. “The free VPN apps, and the other is trojanized torrents. They’ll re-upload Photoshop and stuff like that so that it’s backdoored with the 911 proxy. They claim the proxy is bundled with legitimate software and that users all agree to their Terms of Service, meanwhile they can hide behind the claim that it was some affiliate who installed the software, not them.”
Kilmer said at last count, 911 had nearly 200,000 proxy nodes for sale, spanning more than 200 countries: The largest geographic concentration is the United States, where more than 42,000 proxies are currently for rent by the service.
Beware of “free” or super low-cost VPN services. Proper VPN services are not cheap to operate, so the revenue for the service has to come from somewhere. And there are countless “free” VPN services that are anything but, as we’ve seen with 911.
In general, the rule of thumb for transacting online is that if you’re not the paying customer, then you and/or your devices are probably the product that’s being sold to others. Many free VPN services will enlist users as VPN nodes for others to use, and some even offset costs by collecting and reselling data from their users.
All VPN providers claim to prioritize the privacy of their users, but many then go on to collect and store all manner of personal and financial data from those customers. Others are fairly opaque about their data collection and retention policies.
I’ve largely avoided wading into the fray about which VPN services are best, but there are so many shady and just plain bad ones out there that I’d be remiss if I didn’t mention one VPN provider whose business practices and transparency of operation consistently distinguish them from the rest. If maintaining your privacy and anonymity are primary concerns for you as a VPN user, check out Mullvad.net.
Let me make clear that KrebsOnSecurity does not have any financial or business ties to this company (for the avoidance of doubt, this post doesn’t even link to them). I mention it only because I’ve long been impressed with their candor and openness, and because Mullvad goes out of its way to discourage customers from sharing personal or financial data.
To that end, Mullvad will even accept mailed payments of cash to fund accounts, quite a rarity these days. More importantly, the service doesn’t ask users to share phone numbers, email addresses or any other personal information. Nor does it require customers to create passwords: Each subscription can be activated just by entering a Mullvad account number (woe to those who lose their account number).
I wish more companies would observe this remarkably economical security practice, which boils down to the mantra, “You don’t have to protect what you don’t collect.”
Update, July 24, 11:15 a.m. ET: 911’s homepage now includes a banner saying the service has halted new registrations and payments. “We are reviewing our network and adding a series of security measures to prevent misuse of our services,” the message reads. “Proxy balance top-up and new user registration are closed. We are reviewing every existing user, to ensure their usage is legit and [in] compliance with our Terms of Service.”
Update, July 30, 10:07 a.m. ET: 911 announced on July 28 that it is permanently closing down, following a series of data breaches this month that 911 says resulted in the deletion of customer data.
It’s been seven years since the online cheating site AshleyMadison.com was hacked and highly sensitive data about its users posted online. The leak led to the public shaming and extortion of many Ashley Madison users, and to at least two suicides. To date, little is publicly known about the perpetrators or the true motivation for the attack. But a recent review of Ashley Madison mentions across Russian cybercrime forums and far-right websites in the months leading up to the hack revealed some previously unreported details that may deserve further scrutiny.
As first reported by KrebsOnSecurity on July 19, 2015, a group calling itself the “Impact Team” released data sampled from millions of users, as well as maps of internal company servers, employee network account information, company bank details and salary information.
The Impact Team said it decided to publish the information because ALM “profits on the pain of others,” and in response to a paid “full delete” service Ashley Madison parent firm Avid Life Media offered that allowed members to completely erase their profile information for a $19 fee.
According to the hackers, although the delete feature promised “removal of site usage history and personally identifiable information from the site,” users’ purchase details — including real name and address — weren’t actually scrubbed.
“Full Delete netted ALM $1.7mm in revenue in 2014. It’s also a complete lie,” the hacking group wrote. “Users almost always pay with credit card; their purchase details are not removed as promised, and include real name and address, which is of course the most important information the users want removed.”
A snippet of the message left behind by the Impact Team.
The Impact Team said ALM had one month to take Ashley Madison offline, along with a sister property called Established Men. The hackers promised that if a month passed and the company did not capitulate, it would release “all customer records, including profiles with all the customers’ secret sexual fantasies and matching credit card transactions, real names and addresses, and employee documents and emails.”
Exactly 30 days later, on Aug. 18, 2015, the Impact Team posted a “Time’s up!” message online, along with links to 60 gigabytes of Ashley Madison user data.
One aspect of the Ashley Madison breach that’s always bothered me is how the perpetrators largely cast themselves as fighting a crooked company that broke their privacy promises, and how this narrative was sustained at least until the Impact Team decided to leak all of the stolen user account data in August 2015.
Granted, ALM had a lot to answer for. For starters, after the breach it became clear that a great many of the female Ashley Madison profiles were either bots or created once and never used again. Experts combing through the leaked user data determined that fewer than one percent of the female profiles on Ashley Madison had been used on a regular basis, and the rest were used just once — on the day they were created. On top of that, researchers found 84 percent of the profiles were male.
But the Impact Team had to know that ALM would never comply with their demands to dismantle Ashley Madison and Established Men. In 2014, ALM reported revenues of $115 million. There was little chance the company was going to shut down some of its biggest money machines.
Hence, it appears the Impact Team’s goal all along was to create prodigious amounts of drama and tension by announcing the hack of a major cheating website, and then letting that drama play out over the next few months as millions of exposed Ashley Madison users freaked out and became the targets of extortion attacks and public shaming.
Robert Graham, CEO of Errata Security, penned a blog post in 2015 concluding that the moral outrage professed by the Impact Team was pure posturing.
“They appear to be motivated by the immorality of adultery, but in all probability, their motivation is that #1 it’s fun and #2 because they can,” Graham wrote.
Per Thorsheim, a security researcher in Norway, told Wired at the time that he believed the Impact Team was motivated by an urge to destroy ALM with as much aggression as they could muster.
“It’s not just for the fun and ‘because we can,’ nor is it just what I would call ‘moralistic fundamentalism,'” Thorsheim told Wired. “Given that the company had been moving toward an IPO right before the hack went public, the timing of the data leaks was likely no coincidence.”
As the seventh anniversary of the Ashley Madison hack rolled around, KrebsOnSecurity went back and looked for any mentions of Ashley Madison or ALM on cybercrime forums in the months leading up to the Impact Team’s initial announcement of the breach on July 19, 2015. There wasn’t much, except a Russian guy offering to sell payment and contact information on 32 million AshleyMadison users, and a bunch of Nazis upset about a successful Jewish CEO promoting adultery.
Cyber intelligence firm Intel 471 recorded a series of posts by a user with the handle “Brutium” on the Russian-language cybercrime forum Antichat between 2014 and 2016. Brutium routinely advertised the sale of large, hacked databases, and on Jan. 24, 2015, this user posted a thread offering to sell data on 32 million Ashley Madison users:
“Data from July 2015
Total ~32 Million contacts:
full name; email; phone numbers; payment, etc.”
It’s unclear whether the postdated “July 2015” statement was a typo, or if Brutium updated that sales thread at some point. There is also no indication whether anyone purchased the information. Brutium’s profile has since been removed from the Antichat forum.
Flashpoint is a threat intelligence company in New York City that keeps tabs on hundreds of cybercrime forums, as well as extremist and hate websites. A search in Flashpoint for mentions of Ashley Madison or ALM prior to July 19, 2015 shows that in the six months leading up to the hack, Ashley Madison and its then-CEO Noel Biderman became a frequent subject of derision across multiple neo-Nazi websites.
On Jan. 14, 2015, a member of the neo-Nazi forum Stormfront posted a lively thread about Ashley Madison in the general discussion area titled, “Jewish owned dating website promoting adultery.”
On July 3, 2015, Andrew Anglin, the editor of the alt-right publication Daily Stormer, posted excerpts about Biderman from a story titled, “Jewish Hyper-Sexualization of Western Culture,” which referred to Biderman as the “Jewish King of Infidelity.”
On July 10, a mocking montage of Biderman photos with racist captions was posted to the extremist website Vanguard News Network, as part of a thread called “Jews normalize sexual perversion.”
“Biderman himself says he’s a happily married father of two and does not cheat,” reads the story posted by Anglin on the Daily Stormer. “In an interview with the ‘Current Affair’ program in Australia, he admitted that if he found out his own wife was accessing his cheater’s site, ‘I would be devastated.'”
The leaked AshleyMadison data included more than three years’ worth of emails stolen from Biderman. The hackers told Motherboard in 2015 they had 300 GB worth of employee emails, but that they saw no need to dump the inboxes of other company employees.
Several media outlets pounced on salacious exchanges in Biderman’s emails as proof he had carried on multiple affairs. Biderman resigned as CEO on Aug. 28, 2015. The last message in the archive of Biderman’s stolen emails was dated July 7, 2015 — almost two weeks before the Impact Team would announce their hack.
Biderman told KrebsOnSecurity on July 19, 2015 that the company believed the hacker was some type of insider.
“We’re on the doorstep of [confirming] who we believe is the culprit, and unfortunately that may have triggered this mass publication,” Biderman said. “I’ve got their profile right in front of me, all their work credentials. It was definitely a person here that was not an employee but certainly had touched our technical services.”
Certain language in the Impact Team’s manifesto seemed to support this theory, such as the line: “For a company whose main promise is secrecy, it’s like you didn’t even try, like you thought you had never pissed anyone off.”
But despite ALM offering a belated $500,000 reward for information leading to the arrest and conviction of those responsible, to this day no one has been charged in connection with the hack.
Microleaves, a ten-year-old proxy service that lets customers route their web traffic through millions of Microsoft Windows computers, recently fixed a vulnerability in their website that exposed their entire user database. Microleaves claims its proxy software is installed with user consent, but data exposed in the breach shows the service has a lengthy history of being supplied with new proxies by affiliates incentivized to distribute the software any which way they can — such as by secretly bundling it with other titles.
The Microleaves proxy service, which is in the process of being rebranded to Shifter[.[io.
Launched in 2013, Microleaves is a service that allows customers to route their Internet traffic through PCs in virtually any country or city around the globe. Microleaves works by changing each customer’s Internet Protocol (IP) address every five to ten minutes.
The service, which accepts PayPal, Bitcoin and all major credit cards, is aimed primarily at enterprises engaged in repetitive, automated activity that often results in an IP address being temporarily blocked — such as data scraping, or mass-creating new accounts at some service online.
In response to a report about the data exposure from KrebsOnSecurity, Microleaves said it was grateful for being notified about a “very serious issue regarding our customer information.”
Abhishek Gupta is the PR and marketing manager for Microleaves, which he said in the process of being rebranded to “Shifter.io.” Gupta said the report qualified as a “medium” severity security issue in Shifter’s brand new bug bounty program (the site makes no mention of a bug bounty), which he said offers up to $2,000 for reporting data exposure issues like the one they just fixed. KrebsOnSecurity declined the offer and requested that Shifter donate the amount to the Electronic Frontier Foundation (EFF), a digital rights group.
From its inception nearly a decade ago, Microleaves has claimed to lease between 20-30 million IPs via its service at any time. Riley Kilmer, co-founder of the proxy-tracking service Spur.us, said that 20-30 million number might be accurate for Shifter if measured across a six-month time frame. Currently, Spur is tracking roughly a quarter-million proxies associated with Microleaves/Shifter each day, with a high rate of churn in IPs.
Early on, this rather large volume of IP addresses led many to speculate that Microleaves was just a botnet which was being resold as a commercial proxy service.
Proxy traffic related to top Microleaves users, as exposed by the website’s API.
The very first discussion thread started by the new user Microleaves on the forum BlackHatWorld in 2013 sought forum members who could help test and grow the proxy network. At the time, the Microleaves user said their proxy network had 150,000 IPs globally, and was growing quickly.
One of BlackHatWorld’s moderators asked the administrator of the forum to review the Microleaves post.
“User states has 150k proxies,” the forum skeptic wrote. “No seller on BHW has 150k working daily proxies none of us do. Which hints at a possible BOTNET. That’s the only way you will get 150k.”
Microleaves has long been classified by antivirus companies as adware or as a “potentially unwanted program” (PUP), the euphemism that antivirus companies use to describe executable files that get installed with ambiguous consent at best, and are often part of a bundle of software tied to some “free” download. Security vendor Kaspersky flags the Microleaves family of software as a trojan horse program that commandeers the user’s Internet connection as a proxy without notifying the user.
“While working, these Trojans pose as Microsoft Windows Update,” Kaspersky wrote.
In a February 2014 post to BlackHatWorld, Microleaves announced that its sister service — reverseproxies[.]com — was now offering an “Auto CAPTCHA Solving Service,” which automates the solving of those squiggly and sometimes frustrating puzzles that many websites use to distinguish bots from real visitors. The CAPTCHA service was offered as an add-on to the Microleaves proxy service, and ranged in price from $20 for a 2-day trial to $320 for solving up to 80 captchas simultaneously.
“We break normal Recaptcha with 60-90% success rate, recaptcha with blobs 30% success, and 500+ other captcha,” Microleaves wrote. “As you know all success rate on recaptcha depends very much on good proxies that are fresh and not spammed!”
The exposed Microleaves user database shows that the first user created on the service — username “admin” — used the email address alex.iulian@aol.com. A search on that email address in Constella Intelligence, a service that tracks breached data, reveals it was used to create an account at the link shortening service bit.ly under the name Alexandru Florea, and the username “Acidut.” [Full disclosure: Constella is currently an advertiser on this website].
According to the cyber intelligence company Intel 471, a user named Acidut with the email address iulyan87_4u@gmail.com had an active presence on almost a dozen shadowy money-making and cybercrime forums from 2010 to 2017, including BlackHatWorld, Carder[.]pro, Hackforums, OpenSC, and CPAElites.
The user Microleaves (later “Shifter.io”) advertised on BlackHatWorld the sale of 31 million residential IPs for use as proxies, in late 2013. The same account continues to sell subscriptions to Shifter.io.
In a 2011 post on Hackforums, Acidut said they were building a botnet using an “exploit kit,” a set of browser exploits made to be stitched into hacked websites and foist malware on visitors. Acidut claimed their exploit kit was generating 3,000 to 5,000 new bots each day. OpenSC was hacked at one point, and its private messages show Acidut purchased a license from Exmanoize, the handle used by the creator of the Eleonore Exploit Kit.
By November 2013, Acidut was advertising the sale of “26 million SOCKS residential proxies.” In a March 2016 post to CPAElites, Acidut said they had a worthwhile offer for people involved in pay-per-install or “PPI” schemes, which match criminal gangs who pay for malware installs with enterprising hackers looking to sell access to compromised PCs and websites.
Because pay-per-install affiliate schemes rarely impose restrictions on how the software can be installed, such programs can be appealing for cybercriminals who already control large collections of hacked machines and/or compromised websites. Indeed, Acidut went a step further, adding that their program could be quietly and invisibly nested inside of other programs.
“For those of you who are doing PPI I have a global offer that you can bundle to your installer,” Acidut wrote. “I am looking for many installs for an app that will generate website visits. The installer has a silence version which you can use inside your installer. I am looking to buy as many daily installs as possible worldwide, except China.”
Asked about the source of their proxies in 2014, the Microleaves user responded that it was “something related to a PPI network. I can’t say more and I won’t get into details.”
Acidut authored a similar message on the forum BlackHatWorld in 2013, where they encouraged users to contact them on Skype at the username “nevo.julian.” That same Skype contact address was listed prominently on the Microleaves homepage up until about a week ago when KrebsOnSecurity first reached out to the company.
There is a Facebook profile for an Alexandru Iulian Florea from Constanta, Romania, whose username on the social media network is Acidut. Prior to KrebsOnSecurity alerting Shifter of its data breach, the Acidut profile page associated Florea with the websites microleaves.com, shrooms.io, leftclick[.]io, and online[.]io. Mr. Florea did not respond to multiple requests for comment, and his Facebook page no longer mentions these domains.
Leftclick and online[.]io emerged as subsidiaries of Microleaves between 2017 and 2018. According to a help wanted ad posted in 2018 for a developer position at online[.]io, the company’s services were brazenly pitched to investors as “a cybersecurity and privacy tool kit, offering extensive protection using advanced adblocking, anti-tracking systems, malware protection, and revolutionary VPN access based on residential IPs.”
A teaser from Irish Tech News.
“Online[.]io is developing the first fully decentralized peer-to-peer networking technology and revolutionizing the browsing experience by making it faster, ad free, more reliable, secure and non-trackable, thus freeing the Internet from annoying ads, malware, and trackers,” reads the rest of that help wanted ad.
Microleaves CEO Alexandru Florea gave an “interview” to the website Irishtechnews.ie in 2018, in which he explained how Online[.]io (OIO) was going to upend the online advertising and security industries with its initial coin offering (ICO). The word interview is in air quotes because the following statements by Florea deserved some serious pushback by the interviewer.
“Online[.]io solution, developed using the Ethereum blockchain, aims at disrupting the digital advertising market valued at more than $1 trillion USD,” Alexandru enthused. “By staking OIO tokens and implementing our solution, the website operators will be able to access a new non-invasive revenue stream, which capitalizes on time spent by users online.”
“At the same time, internet users who stake OIO tokens will have the opportunity to monetize on the time spent online by themselves and their peers on the World Wide Web,” he continued. “The time spent by users online will lead to ICE tokens being mined, which in turn can be used in the dedicated merchant system or traded on exchanges and consequently changed to fiat.”
Translation: If you install our proxy bot/CAPTCHA-solver/ad software on your computer — or as an exploit kit on your website — we’ll make millions hijacking ads and you will be rewarded with heaps of soon-to-be-worthless shitcoin. Oh, and all your security woes will disappear, too.
It’s unclear how many Internet users and websites willingly agreed to get bombarded with Online[.]io’s annoying ads and search hijackers — and to have their PC turned into a proxy or CAPTCHA-solving zombie for others. But that is exactly what multiple security companies said happened when users encountered online[.]io, which operated using the Microsoft Windows process name of “online-guardian.exe.”
Incredibly, Crunchbase says Online[.]io raised $6 million in funding for an initial coin offering in 2018, based on the plainly ludicrous claims made above. Since then, however, online[.]io seems to have gone…offline, for good.
Until this week, Shifter.io’s website also exposed information about its customer base and most active users, as well as how much money each client has paid over the lifetime of their subscription. The data indicates Shifter has earned more than $11.7 million in direct payments, although it’s unclear how far back in time those payment records go, or how complete they are.
The bulk of Shifter customers who spent more than $100,000 at the proxy service appear to be digital advertising companies, including some located in the United States. None of the several Shifter customers approached by KrebsOnSecurity agreed to be interviewed.
Shifter’s Gupta said he’d been with the company for three years, since the new owner took over the company and made the rebrand to Shifter.
“The company has been on the market for a long time, but operated under a different brand called Microleaves, until new ownership and management took over the company started a reorganization process that is still on-going,” Gupta said. “We are fully transparent. Mostly [our customers] work in the data scraping niche, this is why we actually developed more products in this zone and made a big shift towards APIs and integrated solutions in the past year.”
Ah yes, the same APIs and integrated solutions that were found exposed to the Internet and leaking all of Shifter’s customer information.
Gupta said the original founder of Microleaves was a man from India, who later sold the business to Florea. According to Gupta, the Romanian entrepreneur had multiple issues in trying to run the company, and then sold it three years ago to the current owner — Super Tech Ventures, a private equity company based in Taiwan.
“Our CEO is Wang Wei, he has been with the company since 3 years ago,” Gupta said. “Mr. Florea left the company two years ago after ending this transition period.”
Google and other search engines seem to know nothing about a Super Tech Ventures based in Taiwan. Incredibly, Shifter’s own PR person claimed that he, too, was in the dark on this subject.
“I would love to help, but I really don’t know much about the mother company,” Gupta said, essentially walking back his “fully transparent” statement. “I know they are a branch of the bigger group of asian investment firms focused on private equity in multiple industries.”
Adware and proxy software are often bundled together with “free” software utilities online, or with popular software titles that have been pirated and quietly fused with installers tied to various PPI affiliate schemes.
But just as often, these intrusive programs will include some type of notice — even if installed as part of a software bundle — that many users simply do not read and click “Next” to get on with installing whatever software they’re seeking to use. In these cases, selecting the “basic” or “default” settings while installing usually hides any per-program installation prompts, and assumes you agree to all of the bundled programs being installed. It’s always best to opt for the “custom” installation mode, which can give you a better idea of what is actually being installed, and can let you control certain aspects of the installation.
Either way, it’s best to start with the assumption that if a software or service online is “free,” that there is likely some component involved that allows the provider of that service to monetize your activity. As KrebsOnSecurity noted at the conclusion of last week’s story on a China-based proxy service called 911, the rule of thumb for transacting online is that if you’re not the paying customer, then you and/or your devices are probably the product that’s being sold to others.
Further reading on proxy services:
July 18, 2022: A Deep Dive Into the Residential Proxy Service ‘911’
June 28, 2022: The Link Between AWM Proxy & the Glupteba Botnet
June 22, 2022: Meet the Administrators of the RSOCKS Proxy Botnet
Sept. 1, 2021: 15-Year-Old Malware Proxy Network VIP72 Goes Dark
Aug. 19, 2019: The Rise of “Bulletproof” Residential Networks
The 911 service as it existed until July 28, 2022.
911[.]re, a proxy service that since 2015 has sold access to hundreds of thousands of Microsoft Windows computers daily, announced this week that it is shutting down in the wake of a data breach that destroyed key components of its business operations. The abrupt closure comes ten days after KrebsOnSecurity published an in-depth look at 911 and its connections to shady pay-per-install affiliate programs that secretly bundled 911’s proxy software with other titles, including “free” utilities and pirated software.
911[.]re is was one of the original “residential proxy” networks, which allow someone to rent a residential IP address to use as a relay for his/her Internet communications, providing anonymity and the advantage of being perceived as a residential user surfing the web.
Residential proxy services are often marketed to people seeking the ability to evade country-specific blocking by the major movie and media streaming providers. But some of them — like 911 — build their networks in part by offering “free VPN” or “free proxy” services that are powered by software which turns the user’s PC into a traffic relay for other users. In this scenario, users indeed get to use a free VPN service, but they are often unaware that doing so will turn their computer into a proxy that lets others use their Internet address to transact online.
From a website’s perspective, the IP traffic of a residential proxy network user appears to originate from the rented residential IP address, not from the proxy service customer. These services can be used in a legitimate manner for several business purposes — such as price comparisons or sales intelligence — but they are massively abused for hiding cybercrime activity because they can make it difficult to trace malicious traffic to its original source.
As noted in KrebsOnSecurity’s July 19 story on 911, the proxy service operated multiple pay-per-install schemes that paid affiliates to surreptitiously bundle the proxy software with other software, continuously generating a steady stream of new proxies for the service.
A cached copy of flashupdate[.]net circa 2016, which shows it was the homepage of a pay-per-install affiliate program that incentivized the silent installation of 911’s proxy software.
Within hours of that story, 911 posted a notice at the top of its site, saying, “We are reviewing our network and adding a series of security measures to prevent misuse of our services. Proxy balance top-up and new user registration are closed. We are reviewing every existing user, to ensure their usage is legit and [in] compliance with our Terms of Service.”
At this announcement, all hell broke loose on various cybercrime forums, where many longtime 911 customers reported they were unable to use the service. Others affected by the outage said it seemed 911 was trying to implement some sort of “know your customer” rules — that maybe 911 was just trying to weed out those customers using the service for high volumes of cybercriminal activity.
Then on July 28, the 911 website began redirecting to a notice saying, “We regret to inform you that we permanently shut down 911 and all its services on July 28th.”
According to 911, the service was hacked in early July, and it was discovered that someone manipulated the balances of a large number of user accounts. 911 said the intruders abused an application programming interface (API) that handles the topping up of accounts when users make financial deposits with the service.
“Not sure how did the hacker get in,” the 911 message reads. “Therefore, we urgently shut down the recharge system, new user registration, and an investigation started.”
The parting message from 911 to its users, posted to the homepage July 28, 2022.
However the intruders got in, 911 said, they managed to also overwrite critical 911[.]re servers, data and backups of that data.
“On July 28th, a large number of users reported that they could not log in the system,” the statement continues. “We found that the data on the server was maliciously damaged by the hacker, resulting in the loss of data and backups. Its [sic] confirmed that the recharge system was also hacked the same way. We were forced to make this difficult decision due to the loss of important data that made the service unrecoverable.”
Operated largely out of China, 911 was an enormously popular service across many cybercrime forums, and it became something akin to critical infrastructure for this community after two of 911’s longtime competitors — malware-based proxy services VIP72 and LuxSocks — closed their doors in the past year.
Now, many on the crime forums who relied on 911 for their operations are wondering aloud whether there are any alternatives that match the scale and utility that 911 offered. The consensus seems to be a resounding “no.”
I’m guessing we may soon learn more about the security incidents that caused 911 to implode. And perhaps other proxy services will spring up to meet what appears to be a burgeoning demand for such services at the moment, with comparatively little supply.
In the meantime, 911’s absence may coincide with a measurable (if only short-lived) reprieve in unwanted traffic to top Internet destinations, including banks, retailers and cryptocurrency platforms, as many former customers of the proxy service scramble to make alternative arrangements.
Riley Kilmer, co-founder of the proxy-tracking service Spur.us, said 911’s network will be difficult to replicate in the short run.
“My speculation is [911’s remaining competitors] are going to get a major boost in the short term, but a new player will eventually come along,” Kilmer said. “None of those are good replacements for LuxSocks or 911. However, they will all allow anyone to use them. For fraud rates, the attempts will continue but through these replacement services which should be easier to monitor and stop. 911 had some very clean IP addresses.”
911 wasn’t the only major proxy provider disclosing a breach this week tied to unauthenticated APIs: On July 28, KrebsOnSecurity reported that internal APIs exposed to the web had leaked the customer database for Microleaves, a proxy service that rotates its customers’ IP addresses every five to ten minutes. That investigation showed Microleaves — like 911 — had a long history of using pay-per-install schemes to spread its proxy software.
Microsoft today released updates to fix a record 141 security vulnerabilities in its Windows operating systems and related software. Once again, Microsoft is patching a zero-day vulnerability in the Microsoft Support Diagnostics Tool (MSDT), a service built into Windows. Redmond also addressed multiple flaws in Exchange Server — including one that was disclosed publicly prior to today — and it is urging organizations that use Exchange for email to update as soon as possible and to enable additional protections.
In June, Microsoft patched a vulnerability in MSDT dubbed “Follina” that had been used in active attacks for at least three months prior. This latest MSDT bug — CVE-2022-34713 — is a remote code execution flaw that requires convincing a target to open a booby-trapped file, such as an Office document. Microsoft this month also issued a different patch for another MSDT flaw, tagged as CVE-2022-35743.
The publicly disclosed Exchange flaw is CVE-2022-30134, which is an information disclosure weakness. Microsoft also released fixes for three other Exchange flaws that rated a “critical” label, meaning they could be exploited remotely to compromise the system and with no help from users. Microsoft says addressing some of the Exchange vulnerabilities fixed this month requires administrators to enable Windows Extended protection on Exchange Servers. See Microsoft’s blog post on the Exchange Server updates for more details.
“If your organization runs local exchange servers, this trio of CVEs warrant an urgent patch,” said Kevin Breen, director of cyber threat research for Immerse Labs. “Exchanges can be treasure troves of information, making them valuable targets for attackers. With CVE-2022-24477, for example, an attacker can gain initial access to a user’s host and could take over the mailboxes for all exchange users, sending and reading emails and documents. For attackers focused on Business Email Compromise this kind of vulnerability can be extremely damaging.”
The other two critical Exchange bugs are tracked as CVE-2022-24516 and CVE-2022-21980. It’s difficult to believe it’s only been a little more than a year since malicious hackers worldwide pounced in a bevy of zero-day Exchange vulnerabilities to remotely compromise the email systems for hundreds of thousands of organizations running Exchange Server locally for email. That lingering catastrophe is reminder enough that critical Exchange bugs deserve immediate attention.
The SANS Internet Storm Center‘s rundown on Patch Tuesday warns that a critical remote code execution bug in the Windows Point-to-Point Protocol (CVE-2022-30133) could become “wormable” — a threat capable of spreading across a network without any user interaction.
“Another critical vulnerability worth mentioning is an elevation of privilege affecting Active Directory Domain Services (CVE-2022-34691),” SANS wrote. “According to the advisory, ‘An authenticated user could manipulate attributes on computer accounts they own or manage, and acquire a certificate from Active Directory Certificate Services that would allow elevation of privilege to System.’ A system is vulnerable only if Active Directory Certificate Services is running on the domain. The CVSS for this vulnerability is 8.8.”
Breen highlighted a set of four vulnerabilities in Visual Studio that earned Microsoft’s less-dire “important” rating but that nevertheless could be vitally important for the security of developer systems.
“Developers are empowered with access to API keys and deployment pipelines that, if compromised, could be significantly damaging to organizations,” he said. “So it’s no surprise they are often targeted by more advanced attackers. Patches for their tools should not be overlooked. We’re seeing a continued trend of supply-chain compromise too, making it vital that we ensure developers, and their tools, are kept up-to-date with the same rigor we apply to standard updates.”
Greg Wiseman, product manager at Rapid7, pointed to an interesting bug Microsoft patched in Windows Hello, the biometric authentication mechanism for Windows 10. Microsoft notes that the successful exploitation of the weakness requires physical access to the target device, but would allow an attacker to bypass a facial recognition check.
Wiseman said despite the record number of vulnerability fixes from Redmond this month, the numbers are slightly less dire.
“20 CVEs affect their Chromium-based Edge browser and 34 affect Azure Site Recovery (up from 32 CVEs affecting that product last month),” Wiseman wrote. “As usual, OS-level updates will address a lot of these, but note that some extra configuration is required to fully protect Exchange Server this month.”
As it often does on Patch Tuesday, Adobe has also released security updates for many of its products, including Acrobat and Reader, Adobe Commerce and Magento Open Source. More details here.
Please consider backing up your system or at least your important documents and data before applying system updates. And if you run into any problems with these updates, please drop a note about it here in the comments.
Microsoft today released updates to fix at least 85 security holes in its Windows operating systems and related software, including a new zero-day vulnerability in all supported versions of Windows that is being actively exploited. However, noticeably absent from this month’s Patch Tuesday are any updates to address a pair of zero-day flaws being exploited this past month in Microsoft Exchange Server.
The new zero-day flaw– CVE-2022-41033 — is an “elevation of privilege” bug in the Windows COM+ event service, which provides system notifications when users logon or logoff. Microsoft says the flaw is being actively exploited, and that it was reported by an anonymous individual.
“Despite its relatively low score in comparison to other vulnerabilities patched today, this one should be at the top of everyone’s list to quickly patch,” said Kevin Breen, director of cyber threat research at Immersive Labs. “This specific vulnerability is a local privilege escalation, which means that an attacker would already need to have code execution on a host to use this exploit. Privilege escalation vulnerabilities are a common occurrence in almost every security compromise. Attackers will seek to gain SYSTEM or domain-level access in order to disable security tools, grab credentials with tools like Mimkatz and move laterally across the network.
Indeed, Satnam Narang, senior staff research engineer at Tenable, notes that almost half of the security flaws Microsoft patched this week are elevation of privilege bugs.
Some privilege escalation bugs can be particularly scary. One example is CVE-2022-37968, which affects organizations running Kubernetes clusters on Azure and earned a CVSS score of 10.0 — the most severe score possible.
Microsoft says that to exploit this vulnerability an attacker would need to know the randomly generated DNS endpoint for an Azure Arc-enabled Kubernetes cluster. But that may not be such a tall order, says Breen, who notes that a number of free and commercial DNS discovery services now make it easy to find this information on potential targets.
Late last month, Microsoft acknowledged that attackers were exploiting two previously unknown vulnerabilities in Exchange Server. Paired together, the two flaws are known as “ProxyNotShell” and they can be chained to allow remote code execution on Exchange Server systems.
Microsoft said it was expediting work on official patches for the Exchange bugs, and it urged affected customers to enable certain settings to mitigate the threat from the attacks. However, those mitigation steps were soon shown to be ineffective, and Microsoft has been adjusting them on a daily basis nearly each day since then.
The lack of Exchange patches leaves a lot of Microsoft customers exposed. Security firm Rapid7 said that as of early September 2022 the company observed more than 190,000 potentially vulnerable instances of Exchange Server exposed to the Internet.
“While Microsoft confirmed the zero-days and issued guidance faster than they have in the past, there are still no patches nearly two weeks out from initial disclosure,” said Caitlin Condon, senior manager of vulnerability research at Rapid7. “Despite high hopes that today’s Patch Tuesday release would contain fixes for the vulnerabilities, Exchange Server is conspicuously missing from the initial list of October 2022 security updates. Microsoft’s recommended rule for blocking known attack patterns has been bypassed multiple times, emphasizing the necessity of a true fix.”
Adobe also released security updates to fix 29 vulnerabilities across a variety of products, including Acrobat and Reader, ColdFusion, Commerce and Magento. Adobe said it is not aware of active attacks against any of these flaws.
For a closer look at the patches released by Microsoft today and indexed by severity and other metrics, check out the always-useful Patch Tuesday roundup from the SANS Internet Storm Center. And it’s not a bad idea to hold off updating for a few days until Microsoft works out any kinks in the updates: AskWoody.com usually has the lowdown on any patches that may be causing problems for Windows users.
As always, please consider backing up your system or at least your important documents and data before applying system updates. And if you run into any problems with these updates, please drop a note about it here in the comments.
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Let’s face it: Having “2022 election” in the headline above is probably the only reason anyone might read this story today. Still, while most of us here in the United States are anxiously awaiting the results of how well we’ve patched our Democracy, it seems fitting that Microsoft Corp. today released gobs of security patches for its ubiquitous Windows operating systems. November’s patch batch includes fixes for a whopping six zero-day security vulnerabilities that miscreants and malware are already exploiting in the wild.
Probably the scariest of the zero-day flaws is CVE-2022-41128, a “critical” weakness in the Windows scripting languages that could be used to foist malicious software on vulnerable users who do nothing more than browse to a hacked or malicious site that exploits the weakness. Microsoft credits Google with reporting the vulnerability, which earned a CVSS score of 8.8.
CVE-2022-41073 is a zero-day flaw in the Windows Print Spooler, a Windows component that Microsoft has patched mightily over the past year. Kevin Breen, director of cyber threat research at Immersive Labs, noted that the print spooler has been a popular target for vulnerabilities in the last 12 months, with this marking the 9th patch.
The third zero-day Microsoft patched this month is CVE-2022-41125, which is an “elevation of privilege” vulnerability in the Windows Cryptography API: Next Generation (CNG) Key Isolation Service, a service for isolating private keys. Satnam Narang, senior staff research engineer at Tenable, said exploitation of this vulnerability could grant an attacker SYSTEM privileges.
The fourth zero-day, CVE-2022-41091, was previously disclosed and widely reported on in October. It is a Security Feature Bypass of “Windows Mark of the Web” – a mechanism meant to flag files that have come from an untrusted source.
The other two zero-day bugs Microsoft patched this month were for vulnerabilities being exploited in Exchange Server. News that these two Exchange flaws were being exploited in the wild surfaced in late September 2022, and many were surprised when Microsoft let October’s Patch Tuesday sail by without issuing official patches for them (the company instead issued mitigation instructions that it was forced to revise multiple times). Today’s patch batch addresses both issues.
Greg Wiseman, product manager at Rapid7, said the Exchange flaw CVE-2022-41040 is a “critical” elevation of privilege vulnerability, and CVE-2022-41082 is considered Important, allowing Remote Code Execution (RCE) when PowerShell is accessible to the attacker.
“Both vulnerabilities have been exploited in the wild,” Wiseman said. “Four other CVEs affecting Exchange Server have also been addressed this month. Three are rated as Important, and CVE-2022-41080 is another privilege escalation vulnerability considered Critical. Customers are advised to update their Exchange Server systems immediately, regardless of whether any previously recommended mitigation steps have been applied. The mitigation rules are no longer recommended once systems have been patched.”
Adobe usually issues security updates for its products on Patch Tuesday, but it did not this month. For a closer look at the patches released by Microsoft today and indexed by severity and other metrics, check out the always-useful Patch Tuesday roundup from the SANS Internet Storm Center. And it’s not a bad idea to hold off updating for a few days until Microsoft works out any kinks in the updates: AskWoody.com usually has the lowdown on any patches that may be causing problems for Windows users.
As always, please consider backing up your system or at least your important documents and data before applying system updates. And if you run into any problems with these updates, please drop a note about it here in the comments.
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Microsoft has released its final monthly batch of security updates for 2022, fixing more than four dozen security holes in its various Windows operating systems and related software. The most pressing patches include a zero-day in a Windows feature that tries to flag malicious files from the Web, a critical bug in PowerShell, and a dangerous flaw in Windows 11 systems that was detailed publicly prior to this week’s Patch Tuesday.
The security updates include patches for Azure, Microsoft Edge, Office, SharePoint Server, SysInternals, and the .NET framework. Six of the update bundles earned Microsoft’s most dire “critical” rating, meaning they fix vulnerabilities that malware or malcontents can use to remotely commandeer an unpatched Windows system — with little to no interaction on the part of the user.
The bug already seeing exploitation is CVE-2022-44698, which allows attackers to bypass the Windows SmartScreen security feature. The vulnerability allows attackers to craft documents that won’t get tagged with Microsoft’s “Mark of the Web,” despite being downloaded from untrusted sites.
“This means no Protected View for Microsoft Office documents, making it easier to get users to do sketchy things like execute malicious macros, said Greg Wiseman, product manager at security firm Rapid7. This is the second Mark of the Web flaw Microsoft has patched in as many months; both were first publicly detailed over the past two months on Twitter by security researcher Will Dormann.
Publicly disclosed (but not actively exploited for now) is CVE-2022-44710, which is an elevation of privilege flaw in the DirectX graphics component of Windows 11.
Another notable critical bug is CVE-2022-41076, a remote code execution flaw in PowerShell — a key component of Windows that makes it easier to automate system tasks and configurations.
Kevin Breen at Immersive Labs said while Microsoft doesn’t share much detail about CVE-2022-41076 apart from the designation ‘Exploitation More Likely,’ they also note that successful exploitation requires an attacker to take additional actions to prepare the target environment.
“What actions are required is not clear; however, we do know that exploitation requires an authenticated user level of access,” Breen said. “This combination suggests that the exploit requires a social engineering element, and would likely be seen in initial infections using attacks like MalDocs or LNK files.”
Speaking of malicious documents, Trend Micro’s Zero Day Initiative highlights CVE-2022-44713, a spoofing vulnerability in Outlook for Mac.
“We don’t often highlight spoofing bugs, but anytime you’re dealing with a spoofing bug in an e-mail client, you should take notice,” ZDI’s Dustin Childs wrote. “This vulnerability could allow an attacker to appear as a trusted user when they should not be. Now combine this with the SmartScreen Mark of the Web bypass and it’s not hard to come up with a scenario where you receive an e-mail that appears to be from your boss with an attachment entitled “Executive_Compensation.xlsx”. There aren’t many who wouldn’t open that file in that scenario.”
Microsoft also released guidance on reports that certain software drivers certified by Microsoft’s Windows Hardware Developer Program were being used maliciously in post-exploitation activity.
Three different companies reported evidence that malicious hackers were using these signed malicious driver files to lay the groundwork for ransomware deployment inside victim organizations. One of those companies, Sophos, published a blog post Tuesday detailing how the activity was tied to the Russian ransomware group Cuba, which has extorted an estimated $60 million from victims since 2019.
Of course, not all scary and pressing security threats are Microsoft-based. Also on Tuesday, Apple released a bevy of security updates to iOS, iPadOS, macOS, tvOS and Safari, including a patch for a newly discovered zero-day vulnerability that could lead to remote code execution.
Anyone responsible for maintaining Fortinet or Citrix remote access products probably needs to update, as both are dealing with active attacks on just-patched flaws.
For a closer look at the patches released by Microsoft today (indexed by severity and other metrics) check out the always-useful Patch Tuesday roundup from the SANS Internet Storm Center. And it’s not a bad idea to hold off updating for a few days until Microsoft works out any kinks in the updates: AskWoody.com usually has the lowdown on any patches that may be causing problems for Windows users.
As always, please consider backing up your system or at least your important documents and data before applying system updates. And if you run into any problems with these updates, please drop a note about it here in the comments.
Microsoft today released updates to fix nearly 100 security flaws in its Windows operating systems and other software. Highlights from the first Patch Tuesday of 2023 include a zero-day vulnerability in Windows, printer software flaws reported by the U.S. National Security Agency, and a critical Microsoft SharePoint Server bug that allows a remote, unauthenticated attacker to make an anonymous connection.
At least 11 of the patches released today are rated “Critical” by Microsoft, meaning they could be exploited by malware or malcontents to seize remote control over vulnerable Windows systems with little or no help from users.
Of particular concern for organizations running Microsoft SharePoint Server is CVE-2023-21743. This is a Critical security bypass flaw that could allow a remote, unauthenticated attacker to make an anonymous connection to a vulnerable SharePoint server. Microsoft says this flaw is “more likely to be exploited” at some point.
But patching this bug may not be as simple as deploying Microsoft updates. Dustin Childs, head of threat awareness at Trend Micro’s Zero Day Initiative, said sysadmins need to take additional measures to be fully protected from this vulnerability.
“To fully resolve this bug, you must also trigger a SharePoint upgrade action that’s also included in this update,” Childs said. “Full details on how to do this are in the bulletin. Situations like this are why people who scream ‘Just patch it!’ show they have never actually had to patch an enterprise in the real world.”
Eighty-seven of the vulnerabilities earned Redmond’s slightly less dire “Important” severity rating. That designation describes vulnerabilities “whose exploitation could result in compromise of the confidentiality, integrity, or availability of user data, or of the integrity or availability of processing resources.”
Among the more Important bugs this month is CVE-2023-21674, which is an “elevation of privilege” weakness in most supported versions of Windows that has already been abused in active attacks.
Satnam Narang, senior staff research engineer at Tenable, said although details about the flaw were not available at the time Microsoft published its advisory on Patch Tuesday, it appears this was likely chained together with a vulnerability in a Chromium-based browser such as Google Chrome or Microsoft Edge in order to break out of a browser’s sandbox and gain full system access.
“Vulnerabilities like CVE-2023-21674 are typically the work of advanced persistent threat (APT) groups as part of targeted attacks,” Narang said. “The likelihood of future widespread exploitation of an exploit chain like this is limited due to auto-update functionality used to patch browsers.”
By the way, when was the last time you completely closed out your Web browser and restarted it? Some browsers will automatically download and install new security updates, but the protection from those updates usually only happens after you restart the browser.
Speaking of APT groups, the U.S. National Security Agency is credited with reporting CVE-2023-21678, which is another “important” vulnerability in the Windows Print Spooler software.
There have been so many vulnerabilities patched in Microsoft’s printing software over the past year (including the dastardly PrintNightmare attacks and borked patches) that KrebsOnSecurity has joked about Patch Tuesday reports being sponsored by Print Spooler. Tenable’s Narang points out that this is the third Print Spooler flaw the NSA has reported in the last year.
Kevin Breen at Immersive Labs called special attention to CVE-2023-21563, which is a security feature bypass in BitLocker, the data and disk encryption technology built into enterprise versions of Windows.
“For organizations that have remote users, or users that travel, this vulnerability may be of interest,” Breen said. “We rely on BitLocker and full-disk encryption tools to keep our files and data safe in the event a laptop or device is stolen. While information is light, this appears to suggest that it could be possible for an attacker to bypass this protection and gain access to the underlying operating system and its contents. If security teams are not able to apply this patch, one potential mitigation could be to ensure Remote Device Management is deployed with the ability to remotely disable and wipe assets.”
There are also two Microsoft Exchange vulnerabilities patched this month — CVE-2023-21762 and CVE-2023-21745. Given the rapidity with which threat actors exploit new Exchange bugs to steal corporate email and infiltrate vulnerable systems, organizations using Exchange should patch immediately. Microsoft’s advisory says these Exchange flaws are indeed “more likely to be exploited.”
Adobe released four patches addressing 29 flaws in Adobe Acrobat and Reader, InDesign, InCopy, and Adobe Dimension. The update for Reader fixes 15 bugs with eight of these being ranked Critical in severity (allowing arbitrary code execution if an affected system opened a specially crafted file).
For a more granular rundown on the updates released today, see the SANS Internet Storm Center roundup. Nearly 100 updates is a lot, and there are bound to be a few patches that cause problems for organizations and end users. When that happens, AskWoody.com usually has the lowdown.
Please consider backing up your data and/or imaging your system before applying any updates. And please sound off in the comments if you experience any problems as a result of these patches.
Authorities in the United States and United Kingdom today levied financial sanctions against seven men accused of operating “Trickbot,” a cybercrime-as-a-service platform based in Russia that has enabled countless ransomware attacks and bank account takeovers since its debut in 2016. The U.S. Department of the Treasury says the Trickbot group is associated with Russian intelligence services, and that this alliance led to the targeting of many U.S. companies and government entities.
Initially a stealthy trojan horse program delivered via email and used to steal passwords, Trickbot evolved into “a highly modular malware suite that provides the Trickbot Group with the ability to conduct a variety of illegal cyber activities, including ransomware attacks,” the Treasury Department said.
A spam email from 2020 containing a Trickbot-infected attachment. Image: Microsoft.
“During the height of the COVID-19 pandemic in 2020, Trickbot targeted hospitals and healthcare centers, launching a wave of ransomware attacks against hospitals across the United States,” the sanctions notice continued. “In one of these attacks, the Trickbot Group deployed ransomware against three Minnesota medical facilities, disrupting their computer networks and telephones, and causing a diversion of ambulances. Members of the Trickbot Group publicly gloated over the ease of targeting the medical facilities and the speed with which the ransoms were paid to the group.”
Only one of the men sanctioned today is known to have been criminally charged in connection with hacking activity. According to the Treasury Department, the alleged senior leader of the Trickbot group is 34-year-old Russian national Vitaly “Bentley” Kovalev.
A New Jersey grand jury indicted Kovalev in 2012 after an investigation by the U.S. Secret Service determined that he ran a massive “money mule” scheme, which used phony job offers to trick people into laundering money stolen from hacked small to mid-sized businesses in the United States. The 2012 indictment against Kovalev relates to cybercrimes he allegedly perpetrated prior to the creation of Trickbot.
In 2015, Kovalev reportedly began filming a movie in Russia about cybercrime called “Botnet.” According to a 2016 story from Forbes.ru, Botnet’s opening scene was to depict the plight of Christina Svechinskaya, a Russian student arrested by FBI agents in September 2010.
Christina Svechinskaya, a money mule hired by Bentley who was arrested by the FBI in 2010.
Svechinskaya was one of Bentley’s money mules, most of whom were young Russian students on temporary travel visas in the United States. She was among 37 alleged mules charged with aiding an international cybercrime operation — basically, setting up phony corporate bank accounts for the sole purpose of laundering stolen funds.
Although she possessed no real hacking skills, Svechinskaya’s mugshot and social media photos went viral online and she was quickly dubbed “the world’s sexiest computer hacker” by the tabloids.
Kovalev’s Botnet film project was disrupted after Russian authorities raided the film production company’s offices as part of a cybercrime investigation. In February 2016, Reuters reported that the raid was connected to a crackdown on “Dyre,” a sophisticated trojan that U.S. federal investigators say was the precursor to the Trickbot malware. The Forbes.ru article cited sources close to the investigation who said the film studio was operating as a money-laundering front for the cybercrooks behind Dyre.
But shifting political winds in Russia would soon bring high treason charges against three of the Russian cybercrime investigators tied to the investigation into the film studio. In a major shakeup in 2017, the Kremlin levied treason charges against Sergey Mikhaylov, then deputy chief of Russia’s top anti-cybercrime unit.
Also charged with treason was Ruslan Stoyanov, then a senior employee at Russian security firm Kaspersky Lab [the Forbes.ru report from 2016 said investigators from Mikhaylov’s unit and Kaspersky Lab were present at the film company raid].
Russian media outlets have speculated that the men were accused of treason for helping American cybercrime investigators pursue top Russian hackers. However, the charges against both men were classified and have never been officially revealed. After their brief, closed trial, both men were convicted of treason. Mikhaylov was given a 22 year prison sentence; Stoyanov was sentenced to 14 years in prison.
In September 2021, the Kremlin issued treason charges against Ilya Sachkov, formerly head of the cybersecurity firm Group-IB. According to Reuters, Sachkov and his company were hired by the film studio “to advise the Botnet director and writers on the finer points of cybercrime.” Sachkov remains imprisoned in Russia pending his treason trial.
Trickbot was heavily used by Conti and Ryuk, two of Russia’s most ruthless and successful ransomware groups. Blockchain analysis firm Chainalysis estimates that in 2021 alone, Conti extorted more than USD $100 million from its hacking victims; Chainalysis estimates Ryuk extorted more than USD $150 million from its ransomware victims.
The U.S. cybersecurity firm CrowdStrike has long tracked the activities of Trickbot, Ryuk and Conti under the same moniker — “Wizard Spider” — which CrowdStrike describes as “a Russia-nexus cybercriminal group behind the core development and distribution of a sophisticated arsenal of criminal tools, that allow them to run multiple different types of operations.”
“CrowdStrike Intelligence has observed WIZARD SPIDER targeting multiple countries and industries such as academia, energy, financial services, government, and more,” said Adam Meyers, head of intelligence at CrowdStrike.
This is not the U.S. government’s first swipe at the Trickbot group. In early October 2020, KrebsOnSecurity broke the news that someone had launched a series of coordinated attacks designed to disrupt the Trickbot botnet. A week later, The Washington Post ran a story saying the attack on Trickbot was the work of U.S. Cyber Command, a branch of the Department of Defense headed by the director of the U.S. National Security Agency (NSA).
Days after Russia invaded Ukraine in February 2022, a Ukrainian researcher leaked several years of internal chat logs from the Conti ransomware gang. Those candid conversations offer a fascinating view into the challenges of running a sprawling criminal enterprise with more than 100 salaried employees. They also showed that Conti enjoyed protection from prosecution by Russian authorities, as long as the hacker group took care not to target Russian organizations.
In addition, the leaked Conti chats confirmed there was considerable overlap in the operation and leadership of Conti, Trickbot and Ryuk.
Michael DeBolt, chief intelligence officer at cybersecurity firm Intel 471, said the leaked Conti chats showed Bentley oversaw a team of coders tasked with ensuring that the Trickbot and Conti malware remained undetected by the different antivirus and security software vendors.
In the years prior to the emergence of Trickbot in 2016, Bentley worked closely on the Gameover ZeuS trojan, a peer-to-peer malware threat that infected between 500,000 and a million computers with an automated ransomware strain called Cryptolocker, DeBolt said.
The FBI has a standing $3 million bounty offered for the capture of Evgeny “Slavik” Bogachev, the alleged author of the Zeus trojan. And there are indications that Bentley worked directly with Bogachev. DeBolt pointed to an October 2014 discussion on the exclusive Russian hacking forum Mazafaka that included a complaint by a Russian hosting firm against a forum user by the name “Ferrari” who had failed to pay a $30,000 hosting bill.
In that discussion thread, it emerged that the hosting company thought it was filing a complaint against Slavik. But the Mazafaka member who vouched for Ferrari’s membership on the forum said they knew Ferrari as Bentley the mule handler, and at some point Slavik and Bentley must have been sharing the Ferrari user account.
“It is likely that Slavik (aka. Bogachev) and Bentley (aka. Kovalev) shared the same ‘Ferrari’ handle on the Mazafaka forum circa 2014, which suggests the two had a working relationship at that time, and supports the recent US and UK Government announcements regarding Kovalev’s past involvement in cybercrime predating Dyre or the Trickbot Group,” DeBolt said.
CrowdStrike’s Meyers said while Wizard Spider operations have significantly reduced following the demise of Conti in June 2022, today’s sanctions will likely cause temporary disruptions for the cybercriminal group while they look for ways to circumvent the financial restrictions — which make it illegal to transact with or hold the assets of sanctioned persons or entities.
“Often, when cybercriminal groups are disrupted, they will go dark for a time only to rebrand under a new name,” Meyers said.
The prosecution of Kovalev is being handled by the U.S. Attorney’s Office in New Jersey. A copy of the now-unsealed 2012 indictment of Kovalev is here (PDF).
Microsoft is sending the world a whole bunch of love today, in the form of patches to plug dozens of security holes in its Windows operating systems and other software. This year’s special Valentine’s Day Patch Tuesday includes fixes for a whopping three different “zero-day” vulnerabilities that are already being used in active attacks.
Microsoft’s security advisories are somewhat sparse with details about the zero-day bugs. Redmond flags CVE-2023-23376 as an “Important” elevation of privilege vulnerability in the Windows Common Log File System Driver, which is present in Windows 10 and 11 systems, as well as many server versions of Windows.
“Sadly, there’s just a little solid information about this privilege escalation,” said Dustin Childs, head of threat awareness at Trend Micro’s Zero Day Initiative. “Microsoft does note that the vulnerability would allow an attacker to exploit code as SYSTEM, which would allow them to completely take over a target. This is likely being chained with a remote code execution bug to spread malware or ransomware. Considering this was discovered by Microsoft’s Threat Intelligence Center, it could mean it was used by advanced threat actors. Either way, make sure you test and roll these fixes quickly.”
The zero-day CVE-2023-21715 is a weakness in Microsoft Office that Redmond describes as a “security feature bypass vulnerability.”
“Microsoft lists this as under active exploit, but they offer no info on how widespread these exploits may be,” Childs said. “Based on the write-up, it sounds more like a privilege escalation than a security feature bypass, but regardless, active attacks in a common enterprise application shouldn’t be ignored. It’s always alarming when a security feature is not just bypassed but exploited. Let’s hope the fix comprehensively addresses the problem.”
The third zero-day flaw already seeing exploitation is CVE-2023-21823, which is another elevation of privilege weakness — this one in the Microsoft Windows Graphic component. Researchers at cybersecurity forensics firm Mandiant were credited with reporting the bug.
Kevin Breen, director of cyber threat research at Immersive Labs, pointed out that the security bulletin for CVE-2023-21823 specifically calls out OneNote as being a vulnerable component for the vulnerability.
“In recent weeks, we have seen an increase in the use of OneNote files as part of targeted malware campaigns,” Breen said. “Patches for this are delivered via the app stores and not through the typical formats, so it’s important to double check your organization’s policies.”
Microsoft fixed another Office vulnerability in CVE-2023-21716, which is a Microsoft Word bug that can lead to remote code execution — even if a booby-trapped Word document is merely viewed in the preview pane of Microsoft Outlook. This security hole has a CVSS (severity) score of 9.8 out of a possible 10.
Microsoft also has more valentines for organizations that rely on Microsoft Exchange Server to handle email. Redmond patched three Exchange Server flaws (CVE-2023-21706, CVE-2023-21707, and CVE-2023-21529), all of which Microsoft says are remote code execution flaws that are likely to be exploited.
Microsoft said authentication is required to exploit these bugs, but then again threat groups that attack Exchange vulnerabilities also tend to phish targets for their Exchange credentials.
Microsoft isn’t alone in dropping fixes for scary, ill-described zero-day flaws. Apple on Feb. 13 released an update for iOS that resolves a zero-day vulnerability in Webkit, Apple’s open source browser engine. Johannes Ullrich at the SANS Internet Storm Center notes that in addition to the WebKit problem, Apple fixed a privilege escalation issue. Both flaws are fixed in iOS 16.3.1.
“This privilege escalation issue could be used to escape the browser sandbox and gain full system access after executing code via the WebKit vulnerability,” Ullrich warned.
On a lighter note (hopefully), Microsoft drove the final nail in the coffin for Internet Explorer 11 (IE11). According to Redmond, the out-of-support IE11 desktop application was permanently disabled on certain versions of Windows 10 on February 14, 2023 through a Microsoft Edge update.
“All remaining consumer and commercial devices that were not already redirected from IE11 to Microsoft Edge were redirected with the Microsoft Edge update. Users will be unable to reverse the change,” Microsoft explained. “Additionally, redirection from IE11 to Microsoft Edge will be included as part of all future Microsoft Edge updates. IE11 visual references, such as the IE11 icons on the Start Menu and taskbar, will be removed by the June 2023 Windows security update (“B” release) scheduled for June 13, 2023.”
For a more granular rundown on the updates released today, see the SANS Internet Storm Center roundup. If today’s updates cause any stability or usability issues in Windows, AskWoody.com will likely have the lowdown on that.
Please consider backing up your data and/or imaging your system before applying any updates. And feel free to sound off in the comments if you experience any problems as a result of these patches.
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A security firm has discovered that a six-year-old crafty botnet known as Mylobot appears to be powering a residential proxy service called BHProxies, which offers paying customers the ability to route their web traffic anonymously through compromised computers. Here’s a closer look at Mylobot, and a deep dive into who may be responsible for operating the BHProxies service.
The BHProxies website.
First identified in 2017 by the security firm Deep Instinct, Mylobot employs a number of fairly sophisticated methods to remain undetected on infected hosts, such as running exclusively in the computer’s temporary memory, and waiting 14 days before attempting to contact the botnet’s command and control servers.
Last year, researchers at Minerva Labs spotted the botnet being used to blast out sextortion scams. But according to a new report from BitSight, the Mylobot botnet’s main functionality has always been about transforming the infected system into a proxy.
The Mylobot malware includes more than 1,000 hard-coded and encrypted domain names, any one of which can be registered and used as control networks for the infected hosts. BitSight researchers found significant overlap in the Internet addresses used by those domains and a domain called BHproxies[.]com.
BHProxies sells access to “residential proxy” networks, which allow someone to rent a residential IP address to use as a relay for their Internet communications, providing anonymity and the advantage of being perceived as a residential user surfing the web. The service is currently advertising access to more than 150,000 devices globally.
“At this point, we cannot prove that BHProxies is linked to Mylobot, but we have a strong suspicion,” wrote BitSight’s Stanislas Arnoud.
To test their hypothesis, BitSight obtained 50 proxies from BHProxies. The researchers were able to use 48 of those 50 proxies to browse to a website they controlled — allowing them to record the true IP addresses of each proxy device.
“Among these 48 recovered residential proxies IP addresses, 28 (58.3%) of those were already present in our sinkhole systems, associated with the Mylobot malware family,” Arnoud continued. “This number is probably higher, but we don’t have a full visibility of the botnet. This gave us clear evidence that Mylobot infected computers are used by the BHProxies service.”
BitSight said it is currently seeing more than 50,000 unique Mylobot infected systems every day, and that India appears to be the most targeted country, followed by the United States, Indonesia and Iran.
“We believe we are only seeing part of the full botnet, which may lead to more than 150,000 infected computers as advertised by BHProxies’ operators,” Arnoud wrote.
The website BHProxies[.]com has been advertised for nearly a decade on the forum Black Hat World by the user BHProxies. BHProxies has authored 129 posts on Black Hat World since 2012, and their last post on the forum was in December 2022.
BHProxies initially was fairly active on Black Hat World between May and November 2012, after which it suddenly ceased all activity. The account didn’t resume posting on the forum until April 2014.
According to cyber intelligence firm Intel 471, the user BHProxies also used the handle “hassan_isabad_subar” and marketed various software tools, including “Subar’s free email creator” and “Subar’s free proxy scraper.”
Intel 471’s data shows that hassan_isabad_subar registered on the forum using the email address jesus.fn.christ@gmail.com. In a June 2012 private message exchange with a website developer on Black Hat World, hassan_isabad_subar confided that they were working at the time to develop two websites, including the now-defunct customscrabblejewelry.com.
DomainTools.com reports that customscrabblejewelry.com was registered in 2012 to a Teresa Shotliff in Chesterland, Ohio. A search on jesus.fn.christ@gmail.com at Constella Intelligence, a company that tracks compromised databases, shows this email address is tied to an account at the fundraising platform omaze.com, for a Brian Shotliff from Chesterland, Ohio.
Reached via LinkedIn, Mr. Shotliff said he sold his BHProxies account to another Black Hat World forum user from Egypt back in 2014. Shotliff shared an April 2014 password reset email from Black Hat World, which shows he forwarded the plaintext password to the email address legendboy2050@yahoo.com. He also shared a PayPal receipt and snippets of Facebook Messenger logs showing conversations in March 2014 with legendboy2050@yahoo.com.
Constella Intelligence confirmed that legendboy2050@yahoo.com was indeed another email address tied to the hassan_isabad_subar/BHProxies identity on Black Hat World. Constella also connects legendboy2050 to Facebook and Instagram accounts for one Abdala Tawfik from Cairo. This user’s Facebook page says Tawfik also uses the name Abdalla Khafagy.
Tawfik’s Instagram account says he is a former operations manager at the social media network TikTok, as well as a former director at Crypto.com.
Abdalla Khafagy’s LinkedIn profile says he was “global director of community” at Crypto.com for about a year ending in January 2022. Before that, the resume says he was operations manager of TikTok’s Middle East and North Africa region for approximately seven months ending in April 2020.
Khafagy’s LinkedIn profile says he is currently founder of LewkLabs, a Dubai-based “blockchain-powered, SocialFi content monetization platform” that last year reported funding of $3.26 million from private investors.
The only experience listed for Khafagy prior to the TikTok job is labeled “Marketing” at “Confidential,” from February 2014 to October 2019.
Reached via LinkedIn, Mr. Khafagy told KrebsOnSecurity that he had a Black Hat World account at some point, but that he didn’t recall ever having used an account by the name BHProxies or hassan_isabad_subar. Khafagy said he couldn’t remember the name of the account he had on the forum.
“I had an account that was simply hacked from me shortly after and I never bothered about it because it wasn’t mine in the first place,” he explained.
Khafagy declined to elaborate on the five-year stint in his resume marked “Confidential.” When asked directly whether he had ever been associated with the BHProxies service, Mr. Khafagy said no.
That Confidential job listing is interesting because its start date lines up with the creation of BHproxies[.]com. Archive.org indexed its first copy of BHProxies[.]com on Mar. 5, 2014, but historic DNS records show BHproxies[.]com first came online Feb. 25, 2014.
Shortly after that conversation with Mr. Khafagy, Mr. Shotliff shared a Facebook/Meta message he received that indicated Mr. Khafagy wanted him to support the claim that the BHProxies account had somehow gone missing.
“Hey mate, it’s been a long time. Hope you are doing well. Someone from Krebs on Security reached out to me about the account I got from you on BHW,” Khafagy’s Meta account wrote. “Didn’t we try to retrieve this account? I remember mentioning to you that it got stolen and I was never able to retrieve it.”
Mr. Shotliff said Khafagy’s sudden message this week was the first time he’d heard that claim.
“He bought the account,” Shotliff said. “He might have lost the account or had it stolen, but it’s not something I remember.”
If you liked this story, you may also enjoy these other investigations into botnet-based proxy services:
A Deep Dive Into the Residential Proxy Service ‘911’
911 Proxy Service Implodes After Disclosing Breach
Meet the Administrators of the RSOCKS Proxy Botnet
The Link Between AWM Proxy & the Glupteba Botnet
15-Year-Old Malware Proxy Network VIP72 Goes Dark
Who’s Behind the TDSS Botnet?
Microsoft on Tuesday released updates to quash at least 74 security bugs in its Windows operating systems and software. Two of those flaws are already being actively attacked, including an especially severe weakness in Microsoft Outlook that can be exploited without any user interaction.
The Outlook vulnerability (CVE-2023-23397) affects all versions of Microsoft Outlook from 2013 to the newest. Microsoft said it has seen evidence that attackers are exploiting this flaw, which can be done without any user interaction by sending a booby-trapped email that triggers automatically when retrieved by the email server — before the email is even viewed in the Preview Pane.
While CVE-2023-23397 is labeled as an “Elevation of Privilege” vulnerability, that label doesn’t accurately reflect its severity, said Kevin Breen, director of cyber threat research at Immersive Labs.
Known as an NTLM relay attack, it allows an attacker to get someone’s NTLM hash [Windows account password] and use it in an attack commonly referred to as “Pass The Hash.”
“The vulnerability effectively lets the attacker authenticate as a trusted individual without having to know the person’s password,” Breen said. “This is on par with an attacker having a valid password with access to an organization’s systems.”
Security firm Rapid7 points out that this bug affects self-hosted versions of Outlook like Microsoft 365 Apps for Enterprise, but Microsoft-hosted online services like Microsoft 365 are not vulnerable.
The other zero-day flaw being actively exploited in the wild — CVE-2023-24880 — is a “Security Feature Bypass” in Windows SmartScreen, part of Microsoft’s slate of endpoint protection tools.
Patch management vendor Action1 notes that the exploit for this bug is low in complexity and requires no special privileges. But it does require some user interaction, and can’t be used to gain access to private information or privileges. However, the flaw can allow other malicious code to run without being detected by SmartScreen reputation checks.
Dustin Childs, head of threat awareness at Trend Micro’s Zero Day Initiative, said CVE-2023-24880 allows attackers to create files that would bypass Mark of the Web (MOTW) defenses.
“Protective measures like SmartScreen and Protected View in Microsoft Office rely on MOTW, so bypassing these makes it easier for threat actors to spread malware via crafted documents and other infected files that would otherwise be stopped by SmartScreen,” Childs said.
Seven other vulnerabilities Microsoft patched this week earned its most-dire “critical” severity label, meaning the updates address security holes that could be exploited to give the attacker full, remote control over a Windows host with little or no interaction from the user.
Also this week, Adobe released eight patches addressing a whopping 105 security holes across a variety of products, including Adobe Photoshop, Cold Fusion, Experience Manager, Dimension, Commerce, Magento, Substance 3D Stager, Cloud Desktop Application, and Illustrator.
For a more granular rundown on the updates released today, see the SANS Internet Storm Center roundup. If today’s updates cause any stability or usability issues in Windows, AskWoody.com will likely have the lowdown on that.
Please consider backing up your data and/or imaging your system before applying any updates. And feel free to sound off in the comments if you experience any problems as a result of these patches.
Several domain names tied to Genesis Market, a bustling cybercrime store that sold access to passwords and other data stolen from millions of computers infected with malicious software, were seized by the Federal Bureau of Investigation (FBI) today. The domain seizures coincided with more than a hundred arrests in the United States and abroad targeting those who allegedly operated the service, as well as suppliers who continuously fed Genesis Market with freshly-stolen data.
Several websites tied to the cybercrime store Genesis Market had their homepages changed today to this seizure notice.
Active since 2018, Genesis Market’s slogan was, “Our store sells bots with logs, cookies, and their real fingerprints.” Customers could search for infected systems with a variety of options, including by Internet address or by specific domain names associated with stolen credentials.
But earlier today, multiple domains associated with Genesis had their homepages replaced with a seizure notice from the FBI, which said the domains were seized pursuant to a warrant issued by the U.S. District Court for the Eastern District of Wisconsin.
The U.S. Attorney’s Office for the Eastern District of Wisconsin did not respond to requests for comment. The FBI declined to comment.
Update, April 5, 11:40 a.m. ET: The U.S. Department of Justice just released a statement on its investigation into Genesis Market. In a press briefing this morning, FBI and DOJ officials said the international law enforcement investigation involved 14 countries and resulted in 400 law enforcement actions, including 119 arrests and 208 searches and interviews worldwide. The FBI confirmed that some American suspects are among those arrested, although officials declined to share more details on the arrests.
The DOJ said investigators were able to access the user database for Genesis Market, and found the invite-only service had more than 59,000 registered users. The database contained the purchase and activity history on all users, which the feds say helped them uncover the true identities of many users.
Original story: But sources close to the investigation tell KrebsOnSecurity that law enforcement agencies in the United States, Canada and across Europe are currently serving arrest warrants on dozens of individuals thought to support Genesis, either by maintaining the site or selling the service bot logs from infected systems.
The seizure notice includes the seals of law enforcement entities from several countries, including Australia, Canada, Denmark, Germany, the Netherlands, Spain, Sweden and the United Kingdom.
When Genesis customers purchase a bot, they’re purchasing the ability to have all of the victim’s authentication cookies loaded into their browser, so that online accounts belonging to that victim can be accessed without the need of a password, and in some cases without multi-factor authentication.
“You can buy a bot with a real fingerprint, access to e-mail, social networks, bank accounts, payment systems!,” a cybercrime forum ad for Genesis enthused. “You also get all previous digital life (history) of the bot – most services won’t even ask for login and password and identify you as their returning customer. Purchasing a bot kit with the fingerprint, cookies and accesses, you become the unique user of all his or her services and other web-sites. The other use of our kit of real fingerprints is to cover-up the traces of your real internet activity.”
The Genesis Store had more than 450,000 bots for sale as of Mar. 21, 2023. Image: KrebsOnSecurity.
The pricing for Genesis bots ranged quite a bit, but in general bots with large amounts of passwords and authentication cookies — or those with access to specific financial websites such as PayPal and Coinbase — tended to fetch far higher prices.
New York based cyber intelligence firm Flashpoint says that in addition to containing a large number of resources, the most expensive bots overwhelmingly seem to have access to accounts that are easy to monetize.
“The high incidence of Google and Facebook is expected, as they are such widely used platforms,” Flashpoint noted in an analysis of Genesis Market, observing that all ten of the ten most expensive bots at the time included Coinbase credentials.
Genesis Market has introduced a number of cybercriminal innovations throughout its existence. Probably the best example is Genesis Security, a custom Web browser plugin which can load a Genesis bot profile so that the browser mimics virtually every important aspect of the victim’s device, from screen size and refresh rate to the unique user agent string tied to the victim’s web browser.
Flashpoint said the administrators of Genesis Market claim they are a team of specialists with “extensive experience in the field of systems metrics.” They say they developed the Genesis Security software by analyzing the top forty-seven browser fingerprinting and tracking systems, as well as those utilized by 283 different banking and payment systems.
Cybersecurity experts say Genesis and a handful of other bot shops are also popular among cybercriminals who work to identify and purchase bots inside corporate networks, and then turn around and resell that access to ransomware gangs.
Michael Debolt, chief intelligence officer for Intel 471, said so-called “network access brokers” will scour automated bot shops for high value targets, and then resell them for a bigger profit.
“From ‘used’ or ‘processed’ logs — it is actually quite common for the same log to be used by multiple different actors who are all using it for different purposes – for instance, some actors are only interested in crypto wallet or banking credentials so they bypass credentials that network access brokers are interested in,” Debolt said. “These network access brokers buy these ‘used’ logs for very cheap (or sometimes for free) and search for big fish targets from there.”
In June 2021, hackers who broke into and stole a wealth of source code and game data from the computer gaming giant EA told Motherboard they gained access by purchasing a $10 bot from Genesis Market that let them log into a company Slack account.
One feature of Genesis that sets it apart from other bot shops is that customers can retain access to infected systems in real-time, so that if the rightful owner of an infected system creates a new account online, those new credentials will get stolen and displayed in the web-based panel of the Genesis customer who purchased that bot.
“While some infostealers are designed to remove themselves after execution, others create persistent access,” reads a March 2023 report from cybersecurity firm SpyCloud. “That means bad actors have access to the current data for as long as the device remains infected, even if the user changes passwords.”
SpyCloud says Genesis even advertises its commitment to keep the stolen data and the compromised systems’ fingerprints up to date.
“According to our research, Genesis Market had more than 430,000 stolen identities for sale as of early last year – and there are many other marketplaces like this one,” the SpyCloud report concludes.
It appears this week’s action targeted only the clear web versions of Genesis Market, and that the store is still operating on a dark web address that is only reachable through the Tor network. In today’s press briefing, DOJ officials said their investigation is ongoing, and that actions taken already have allowed them to disrupt Genesis in a way that may not be readily apparent.
In a blog post today, security firm Trellix said it was approached by the Dutch Police, who were seeking assistance with the analysis and detection of the malicious files linked to Genesis Market.
“The primary goal was to render the market’s scripts and binaries useless,” Trellix researchers wrote.
As described in the Trellix blog, a major part of this effort against Genesis Market involves targeting its suppliers, or cybercriminals who are constantly feeding the market with freshly-stolen bot data. The company says Genesis partnered with multiple cybercriminals responsible for selling, distributing and maintaining different strains of infostealer malware, including malware families such as Raccoon Stealer.
“Over the years, Genesis Market has worked with a large variety of malware families to infect victims, where their info stealing scripts were used to steal information, which was used to populate the Genesis Market store,” the Trellix researchers continued. “It comes as no surprise that the malware families linked to Genesis Market belong to the usual suspects of common info-stealers, like AZORult, Raccoon, Redline and DanaBot. In February 2023, Genesis Market started to actively recruit sellers. We believe with a moderate level of confidence that this was done to keep up with the growing demand of their users.”
How does one’s computer become a bot in one of these fraud networks? Infostealers are continuously mass-deployed via several methods, including malicious attachments in email; manipulating search engine results for popular software titles; and malware that is secretly attached to legitimate software made available for download via software crack websites and file-sharing networks.
John Fokker, head of threat intelligence at Trellix, told KrebsOnSecurity that the Dutch Police tracked down several people whose data was for sale on Genesis Market, and discovered that the victims had installed infostealer malware that was bundled with pirated software.
The Dutch Police have stood up a website that lets visitors check whether their information was part of the stolen data for sale on Genesis. Troy Hunt‘s Have I Been Pwned website is also offering a lookup service based on data seized by the FBI.
Ruben van Well, team leader of the Dutch police cybercrime unit in Rotterdam, said more than 800,000 visitors have already checked their website, and that more than 2,000 of those visitors were alerted to active infostealer malware infections.
Van Well said Dutch authorities executed at least 17 arrests in connection with the investigation so far. He added that while the cybercriminals running Genesis Market promised their customers that user account security was a high priority, the service stored all of its data in plain text.
“If users would say can you please delete my account, they’d do it, but we can still see in the logs that they asked for that,” van Well said. “Genesis Market was not very good at protecting the security of its users, which made a mess for them but it’s been great for law enforcement.”
According to the Dutch Police, Microsoft this morning shipped an update to supported Windows computers that can remove infections from infostealer malware families associated with Genesis Market.
The Dutch computer security firm Computest worked with Trellix and the Dutch Police to analyze the Genesis Market malware. Their highly technical deep-dive is available here.
This is a developing story. Any updates will be added with notice and timestamp here.
Apr. 5, 11:00 am ET: Added statement from Justice Department, and background from a press briefing this morning.
Apr. 5, 12:24 pm ET: Added perspective from Trellix, and context from DOJ officials.
Apr. 5, 1:27 pm ET: Added links to lookup services by the Dutch Police and Troy Hunt.
Microsoft today released software updates to plug 100 security holes in its Windows operating systems and other software, including a zero-day vulnerability that is already being used in active attacks. Not to be outdone, Apple has released a set of important updates addressing two zero-day vulnerabilities that are being used to attack iPhones, iPads and Macs.
On April 7, Apple issued emergency security updates to fix two weaknesses that are being actively exploited, including CVE-2023-28206, which can be exploited by apps to seize control over a device. CVE-2023-28205 can be used by a malicious or hacked website to install code.
Both vulnerabilities are addressed in iOS/iPadOS 16.4.1, iOS 15.7.5, and macOS 12.6.5 and 11.7.6. If you use Apple devices and you don’t have automatic updates enabled (they are on by default), you should probably take care of that soon as detailed instructions on how to attack CVE-2023-28206 are now public.
Microsoft’s bevy of 100 security updates released today include CVE-2023-28252, which is a weakness in Windows that Redmond says is under active attack. The vulnerability is in the Windows Common Log System File System (CLFS) driver, a core Windows component that was the source of attacks targeting a different zero-day vulnerability in February 2023.
“If it seems familiar, that’s because there was a similar 0-day patched in the same component just two months ago,” said Dustin Childs at the Trend Micro Zero Day Initiative. “To me, that implies the original fix was insufficient and attackers have found a method to bypass that fix. As in February, there is no information about how widespread these attacks may be. This type of exploit is typically paired with a code execution bug to spread malware or ransomware.”
According to the security firm Qualys, this vulnerability has been leveraged by cyber criminals to deploy Nokoyawa ransomware.
“This is a relatively new strain for which there is some open source intel to suggest that it is possibly related to Hive ransomware – one of the most notable ransomware families of 2021 and linked to breaches of over 300+ organizations in a matter of just a few months,” said Bharat Jogi, director of vulnerability and threat research at Qualys.
Jogi said while it is still unclear which exact threat actor is targeting CVE-2023-28252, targets have been observed in South and North America, regions across Asia and at organizations in the Middle East.
Satnam Narang at Tenable notes that CVE-2023-28252 is also the second CLFS zero-day disclosed to Microsoft by researchers from Mandiant and DBAPPSecurity (CVE-2022-37969), though it is unclear if both of these discoveries are related to the same attacker.
Seven of the 100 vulnerabilities Microsoft fixed today are rated “Critical,” meaning they can be used to install malicious code with no help from the user. Ninety of the flaws earned Redmond’s slightly less-dire “Important” label, which refers to weaknesses that can be used to undermine the security of the system but which may require some amount of user interaction.
Narang said Microsoft has rated nearly 90% of this month’s vulnerabilities as “Exploitation Less Likely,” while just 9.3% of flaws were rated as “Exploitation More Likely.” Kevin Breen at Immersive Labs zeroed in on several notable flaws in that 9.3%, including CVE-2023-28231, a remote code execution vulnerability in a core Windows network process (DHCP) with a CVSS score of 8.8.
“‘Exploitation more likely’ means it’s not being actively exploited but adversaries may look to try and weaponize this one,” Breen said. “Micorosft does note that successful exploitation requires an attacker to have already gained initial access to the network. This could be via social engineering, spear phishing attacks, or exploitation of other services.”
Breen also called attention to CVE-2023-28220 and CVE-2023-28219 — a pair of remote code execution vulnerabilities affecting Windows Remote Access Servers (RAS) that also earned Microsoft’s “exploitation more likely” label.
“An attacker can exploit this vulnerability by sending a specially crafted connection request to a RAS server, which could lead to remote code execution,” Breen said. While not standard in all organizations, RAS servers typically have direct access from the Internet where most users and services are connected. This makes it extremely enticing for attackers as they don’t need to socially engineer their way into an organization. They can simply scan the internet for RAS servers and automate the exploitation of vulnerable devices.”
For more details on the updates released today, see the SANS Internet Storm Center roundup. If today’s updates cause any stability or usability issues in Windows, AskWoody.com will likely have the lowdown on that.
Please consider backing up your data and/or imaging your system before applying any updates. And feel free to sound off in the comments if you experience any problems as a result of these patches.
The U.S. government this week put a $10 million bounty on a Russian man who for the past 18 years operated Try2Check, one of the cybercrime underground’s most trusted services for checking the validity of stolen credit card data. U.S. authorities say 43-year-old Denis Kulkov‘s card-checking service made him at least $18 million, which he used to buy a Ferrari, Land Rover, and other luxury items.
Denis Kulkov, a.k.a. “Nordex,” in his Ferrari. Image: USDOJ.
Launched in 2005, Try2Check soon was processing more than a million card-checking transactions per month — charging 20 cents per transaction. Cybercriminals turned to services like this after purchasing stolen credit card data from an underground shop, with an eye toward minimizing the number of cards that are inactive by the time they are put to criminal use.
Try2Check was so reliable that it eventually became the official card-checking service for some of the underground’s most bustling crime bazaars, including Vault Market, Unicc, and Joker’s Stash. Customers of these carding shops who chose to use the shop’s built-in (but a-la-carte) card checking service from Try2Check could expect automatic refunds on any cards that were found to be inactive or canceled at the time of purchase.
Many established stolen card shops will allow customers to request refunds on dead cards based on official reports from trusted third-party checking services. But in general, the bigger shops have steered customers toward using their own white-labeled version of the Try2Check service — primarily to help minimize disputes over canceled cards.
On Wednesday, May 3, Try2Check’s websites were replaced with a domain seizure notice from the U.S. Secret Service and U.S. Department of Justice, as prosecutors in the Eastern District of New York unsealed an indictment and search warrant naming Denis Gennadievich Kulkov of Samara, Russia as the proprietor.
Try2Check’s login pages have been replaced with a seizure notice from U.S. law enforcement.
At the same time, the U.S. Department of State issued a $10 million reward for information leading to the arrest or conviction of Kulkov. In November 2021, the State Department began offering up to to $10 million for the name or location of any key leaders of REvil, a major Russian ransomware gang.
As noted in the Secret Service’s criminal complaint (PDF), the Try2Check service was first advertised on the closely-guarded Russian cybercrime forum Mazafaka, by someone using the handle “KreenJo.” That handle used the same ICQ instant messenger account number (555724) as a Mazafaka denizen named “Nordex.”
In February 2005, Nordex posted to Mazafaka that he was in the market for hacked bank accounts, and offered 50 percent of the take. He asked interested partners to contact him at the ICQ number 228427661 or at the email address polkas@bk.ru. As the government noted in its search warrant, Nordex exchanged messages with forum users at the time identifying himself as a then-24-year-old “Denis” from Samara, RU.
In 2017, U.S. law enforcement seized the cryptocurrency exchange BTC-e, and the Secret Service said those records show that a Denis Kulkov from Samara supplied the username “Nordexin,” email address nordexin@ya.ru, and an address in Samara.
Investigators had already found Instagram accounts where Kulkov posted pictures of his Ferrari and his family. Authorities were able to identify that Kulkov had an iCloud account tied to the address nordexin@icloud.com, and upon subpoenaing that found passport photos of Kulkov, and well as more photos of his family and pricey cars.
Like many other top cybercriminals based in Russia or in countries with favorable relations to the Kremlin, the proprietor of Try2Check was not particularly difficult to link to a real-life identity. In Kulkov’s case, it no doubt was critical to U.S. investigators that they had access to a wealth of personal information tied to a cryptocurrency exchange Kulkov had used.
However, the link between Kulkov and Try2Check can be made — ironically — based on records that have been plundered by hackers and published online over the years — including Russian email services, Russian government records, and hacked cybercrime forums.
Kulkov posing with his passport, in a photo authorities obtained by subpoenaing his iCloud account.
According to cybersecurity firm Constella Intelligence, the address polkas@bk.ru was used to register an account with the username “Nordex” at bankir[.]com, a now defunct news website that was almost standard reading for Russian speakers interested in news about various Russian financial markets.
Nordex appears to have been a finance nerd. In his early days on the forums, Nordex posted several long threads on his views about the Russian stock market and mutual fund investments.
That Bankir account was registered from the Internet address 193.27.237.66 in Samara, Russia, and included Nordex’s date of birth as April 8, 1980, as well as their ICQ number (228427661).
Cyber intelligence firm Intel 471 found that Internet address also was used to register the account “Nordex” on the Russian hacking forum Exploit back in 2006.
Constella tracked another Bankir[.]com account created from that same Internet address under the username “Polkas.” This account had the same date of birth as Nordex, but a different email address: nordia@yandex.ru. This and other “nordia@” emails shared a password: “anna59.”
Nordia@yandex.ru shares several passwords with nordia@list.ru, which Constella says was used to create an account at a religious website for an Anna Kulikova from Samara. At the Russian home furnishing store Westwing.ru, Ms. Kulikova listed her full name as Anna Vnrhoturkina Kulikova, and her address as 29 Kommunistrecheskya St., Apt. 110.
A search on that address in Constella brings up a record for an Anna Denis Vnrhoturkina Kulkov, and the phone number 879608229389.
Russian vehicle registration records have also been hacked and leaked online over the years. Those records show that Anna’s Apt 110 address is tied to a Denis Gennadyvich Kulkov, born April 8, 1980.
The vehicle Kolkov registered in 2015 at that address was a 2010 Ferrari Italia, with the license plate number K022YB190. The phone number associated with this record — 79608229389 — is exactly like Anna’s, only minus the (mis?)leading “8”. That number also is tied to a now-defunct Facebook account, and to the email addresses nordexin@ya.ru and nordexin@icloud.com.
Kulkov’s Ferrari has been photographed numerous times over the years by Russian car aficionados, including this one with the driver’s face redacted by the photographer:
The Ferrari owned by Denis Kulkov, spotted in Moscow in 2016. Image: Migalki.net.
As the title of this story suggests, the hard part for Western law enforcement isn’t identifying the Russian cybercriminals who are major players in the scene. Rather, it’s finding creative ways to capture high-value suspects if and when they do leave the protection that Russia generally extends to domestic cybercriminals within its borders who do not also harm Russian companies or consumers, or interfere with state interests.
But Russia’s war against Ukraine has caused major fault lines to appear in the cybercrime underground: Cybercriminal syndicates that previously straddled Russia and Ukraine with ease were forced to reevaluate many comrades who were suddenly working for The Other Side.
Many cybercriminals who operated with impunity from Russia and Ukraine prior to the war chose to flee those countries following the invasion, presenting international law enforcement agencies with rare opportunities to catch most-wanted cybercrooks. One of those was Mark Sokolovsky, a 26-year-old Ukrainian man who operated the popular “Raccoon” malware-as-a-service offering; Sokolovsky was apprehended in March 2022 after fleeing Ukraine’s mandatory military service orders.
Also nabbed on the lam last year was Vyacheslav “Tank” Penchukov, a senior Ukrainian member of a transnational cybercrime group that stole tens of millions of dollars over nearly a decade from countless hacked businesses. Penchukov was arrested after leaving Ukraine to meet up with his wife in Switzerland.
Microsoft today released software updates to fix at least four dozen security holes in its Windows operating systems and other software, including patches for two zero-day vulnerabilities that are already being exploited in active attacks.
First up in May’s zero-day flaws is CVE-2023-29336, which is an “elevation of privilege” weakness in Windows which has a low attack complexity, requires low privileges, and no user interaction. However, as the SANS Internet Storm Center points out, the attack vector for this bug is local.
“Local Privilege escalation vulnerabilities are a key part of attackers’ objectives,” said Kevin Breen, director of cyber threat research at Immersive Labs. “Once they gain initial access they will seek administrative or SYSTEM-level permissions. This can allow the attacker to disable security tooling and deploy more attacker tools like Mimikatz that lets them move across the network and gain persistence.”
The zero-day patch that has received the most attention so far is CVE-2023-24932, which is a Secure Boot Security Feature Bypass flaw that is being actively exploited by “bootkit” malware known as “BlackLotus.” A bootkit is dangerous because it allows the attacker to load malicious software before the operating system even starts up.
According to Microsoft’s advisory, an attacker would need physical access or administrative rights to a target device, and could then install an affected boot policy. Microsoft gives this flaw a CVSS score of just 6.7, rating it as “Important.”
Adam Barnett, lead software engineer at Rapid7, said CVE-2023-24932 deserves a considerably higher threat score.
“Microsoft warns that an attacker who already has Administrator access to an unpatched asset could exploit CVE-2023-24932 without necessarily having physical access,” Barnett said. “Therefore, the relatively low CVSSv3 base score of 6.7 isn’t necessarily a reliable metric in this case.”
Barnett said Microsoft has provided a supplementary guidance article specifically calling out the threat posed by BlackLotus malware, which loads ahead of the operating system on compromised assets, and provides attackers with an array of powerful evasion, persistence, and Command & Control (C2) techniques, including deploying malicious kernel drivers, and disabling Microsoft Defender or Bitlocker.
“Administrators should be aware that additional actions are required beyond simply applying the patches,” Barnett advised. “The patch enables the configuration options necessary for protection, but administrators must apply changes to UEFI config after patching. The attack surface is not limited to physical assets, either; Windows assets running on some VMs, including Azure assets with Secure Boot enabled, also require these extra remediation steps for protection. Rapid7 has noted in the past that enabling Secure Boot is a foundational protection against driver-based attacks. Defenders ignore this vulnerability at their peril.”
In addition to the two zero-days fixed this month, Microsoft also patched five remote code execution (RCE) flaws in Windows, two of which have notably high CVSS scores.
CVE-2023-24941 affects the Windows Network File System, and can be exploited over the network by making an unauthenticated, specially crafted request. Microsoft’s advisory also includes mitigation advice. The CVSS for this vulnerability is 9.8 – the highest of all the flaws addressed this month.
Meanwhile, CVE-2023-28283 is a critical bug in the Windows Lightweight Directory Access Protocol (LDAP) that allows an unauthenticated attacker to execute malicious code on the vulnerable device. The CVSS for this vulnerability is 8.1, but Microsoft says exploiting the flaw may be tricky and unreliable for attackers.
Another vulnerability patched this month that was disclosed publicly before today (but not yet seen exploited in the wild) is CVE-2023-29325, a weakness in Microsoft Outlook and Explorer that can be exploited by attackers to remotely install malware. Microsoft says this vulnerability can be exploited merely by viewing a specially-crafted email in the Outlook Preview Pane.
“To help protect against this vulnerability, we recommend users read email messages in plain text format,” Microsoft’s writeup on CVE-2023-29325 advises.
“If an attacker were able to exploit this vulnerability, they would gain remote access to the victim’s account, where they could deploy additional malware,” Immersive’s Breen said. “This kind of exploit will be highly sought after by e-crime and ransomware groups where, if successfully weaponized, could be used to target hundreds of organizations with very little effort.”
For more details on the updates released today, check out roundups by Action1, Automox and Qualys, If today’s updates cause any stability or usability issues in Windows, AskWoody.com will likely have the lowdown on that.
Please consider backing up your data and/or imaging your system before applying any updates. And feel free to sound off in the comments if you experience any problems as a result of these patches.
Code-signing certificates are supposed to help authenticate the identity of software publishers, and provide cryptographic assurance that a signed piece of software has not been altered or tampered with. Both of these qualities make stolen or ill-gotten code-signing certificates attractive to cybercriminal groups, who prize their ability to add stealth and longevity to malicious software. This post is a deep dive on “Megatraffer,” a veteran Russian hacker who has practically cornered the underground market for malware focused code-signing certificates since 2015.
One of Megatraffer’s ads on an English-language cybercrime forum.
A review of Megatraffer’s posts on Russian crime forums shows this user began peddling individual stolen code-signing certs in 2015 on the Russian-language forum Exploit, and soon expanded to selling certificates for cryptographically signing applications and files designed to run in Microsoft Windows, Java, Adobe AIR, Mac and Microsoft Office.
Megatraffer explained that malware purveyors need a certificate because many antivirus products will be far more interested in unsigned software, and because signed files downloaded from the Internet don’t tend to get blocked by security features built into modern web browsers. Additionally, newer versions of Microsoft Windows will complain with a bright yellow or red alert message if users try to install a program that is not signed.
“Why do I need a certificate?” Megatraffer asked rhetorically in their Jan. 2016 sales thread on Exploit. “Antivirus software trusts signed programs more. For some types of software, a digital signature is mandatory.”
At the time, Megatraffer was selling unique code-signing certificates for $700 apiece, and charging more than twice that amount ($1,900) for an “extended validation” or EV code-signing cert, which is supposed to only come with additional identity vetting of the certificate holder. According to Megatraffer, EV certificates were a “must-have” if you wanted to sign malicious software or hardware drivers that would reliably work in newer Windows operating systems.
Part of Megatraffer’s ad. Image: Ke-la.com.
Megatraffer has continued to offer their code-signing services across more than a half-dozen other Russian-language cybercrime forums, mostly in the form of sporadically available EV and non-EV code-signing certificates from major vendors like Thawte and Comodo.
More recently, it appears Megatraffer has been working with ransomware groups to help improve the stealth of their malware. Shortly after Russia invaded Ukraine in February 2022, someone leaked several years of internal chat logs from the Conti ransomware gang, and those logs show Megatraffer was working with the group to help code-sign their malware between July and October 2020.
According to cyber intelligence firm Intel 471, Megatraffer has been active on more than a half-dozen crime forums from September 2009 to the present day. And on most of these identities, Megatraffer has used the email address 774748@gmail.com. That same email address also is tied to two forum accounts for a user with the handle “O.R.Z.”
Constella Intelligence, a company that tracks exposed databases, finds that 774748@gmail.com was used in connection with just a handful of passwords, but most frequently the password “featar24“. Pivoting off of that password reveals a handful of email addresses, including akafitis@gmail.com.
Intel 471 shows akafitis@gmail.com was used to register another O.R.Z. user account — this one on Verified[.]ru in 2008. Prior to that, akafitis@gmail.com was used as the email address for the account “Fitis,” which was active on Exploit between September 2006 and May 2007. Constella found the password “featar24” also was used in conjunction with the email address spampage@yandex.ru, which is tied to yet another O.R.Z. account on Carder[.]su from 2008.
The email address akafitis@gmail.com was used to create a Livejournal blog profile named Fitis that has a large bear as its avatar. In November 2009, Fitis wrote, “I am the perfect criminal. My fingerprints change beyond recognition every few days. At least my laptop is sure of it.”
Fitis’s Livejournal account. Image: Archive.org.
Fitis’s real-life identity was exposed in 2010 after two of the biggest sponsors of pharmaceutical spam went to war with each other, and large volumes of internal documents, emails and chat records seized from both spam empires were leaked to this author. That protracted and public conflict formed the backdrop of my 2014 book — “Spam Nation: The Inside Story of Organized Cybercrime, from Global Epidemic to Your Front Door.”
One of the leaked documents included a Microsoft Excel spreadsheet containing the real names, addresses, phone numbers, emails, street addresses and WebMoney addresses for dozens of top earners in Spamit — at the time the most successful pharmaceutical spam affiliate program in the Russian hacking scene and one that employed most of the top Russian botmasters.
That document shows Fitis was one of Spamit’s most prolific recruiters, bringing more than 75 affiliates to the Spamit program over several years prior to its implosion in 2010 (and earning commissions on any future sales from all 75 affiliates).
The document also says Fitis got paid using a WebMoney account that was created when its owner presented a valid Russian passport for a Konstantin Evgenievich Fetisov, born Nov. 16, 1982 and residing in Moscow. Russian motor vehicle records show two different vehicles are registered to this person at the same Moscow address.
The most interesting domain name registered to the email address spampage@yahoo.com, fittingly enough, is fitis[.]ru, which DomainTools.com says was registered in 2005 to a Konstantin E. Fetisov from Moscow.
The Wayback Machine at archive.org has a handful of mostly blank pages indexed for fitis[.]ru in its early years, but for a brief period in 2007 it appears this website was inadvertently exposing all of its file directories to the Internet.
One of the exposed files — Glavmed.html — is a general invitation to the infamous Glavmed pharmacy affiliate program, a now-defunct scheme that paid tens of millions of dollars to affiliates who advertised online pill shops mainly by hacking websites and manipulating search engine results. Glavmed was operated by the same Russian cybercriminals who ran the Spamit program.
A Google translated ad circa 2007 recruiting for the pharmacy affiliate program Glavmed, which told interested applicants to contact the ICQ number used by Fitis, a.k.a. MegaTraffer. Image: Archive.org.
Archive.org shows the fitis[.]ru webpage with the Glavmed invitation was continuously updated with new invite codes. In their message to would-be Glavmed affiliates, the program administrator asked applicants to contact them at the ICQ number 165540027, which Intel 471 found was an instant messenger address previously used by Fitis on Exploit.
The exposed files in the archived version of fitis[.]ru include source code for malicious software, lists of compromised websites used for pharmacy spam, and a handful of what are apparently personal files and photos. Among the photos is a 2007 image labeled merely “fitis.jpg,” which shows a bespectacled, bearded young man with a ponytail standing next to what appears to be a newly-married couple at a wedding ceremony.
Mr. Fetisov did not respond to requests for comment.
As a veteran organizer of affiliate programs, Fitis did not waste much time building a new moneymaking collective after Spamit closed up shop. New York City-based cyber intelligence firm Flashpoint found that Megatraffer’s ICQ was the contact number for Himba[.]ru, a cost-per-acquisition (CPA) program launched in 2012 that paid handsomely for completed application forms tied to a variety of financial instruments, including consumer credit cards, insurance policies, and loans.
“Megatraffer’s entrenched presence on cybercrime forums strongly suggests that malicious means are used to source at least a portion of traffic delivered to HIMBA’s advertisers,” Flashpoint observed in a threat report on the actor.
Intel 471 finds that Himba was an active affiliate program until around May 2019, when it stopping paying its associates.
Fitis’s Himba affiliate program, circa February 2014. Image: Archive.org.
Flashpoint notes that in September 2015, Megatraffer posted a job ad on Exploit seeking experienced coders to work on browser plugins, installers and “loaders” — basically remote access trojans (RATs) that establish communication between the attacker and a compromised system.
“The actor specified that he is looking for full-time, onsite help either in his Moscow or Kiev locations,” Flashpoint wrote.
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It’s not often that a zero-day vulnerability causes a network security vendor to urge customers to physically remove and decommission an entire line of affected hardware — as opposed to just applying software updates. But experts say that is exactly what transpired this week with Barracuda Networks, as the company struggled to combat a sprawling malware threat which appears to have undermined its email security appliances in such a fundamental way that they can no longer be safely updated with software fixes.
The Barracuda Email Security Gateway (ESG) 900 appliance.
Campbell, Calif. based Barracuda said it hired incident response firm Mandiant on May 18 after receiving reports about unusual traffic originating from its Email Security Gateway (ESG) devices, which are designed to sit at the edge of an organization’s network and scan all incoming and outgoing email for malware.
On May 19, Barracuda identified that the malicious traffic was taking advantage of a previously unknown vulnerability in its ESG appliances, and on May 20 the company pushed a patch for the flaw to all affected appliances (CVE-2023-2868).
In its security advisory, Barracuda said the vulnerability existed in the Barracuda software component responsible for screening attachments for malware. More alarmingly, the company said it appears attackers first started exploiting the flaw in October 2022.
But on June 6, Barracuda suddenly began urging its ESG customers to wholesale rip out and replace — not patch — affected appliances.
“Impacted ESG appliances must be immediately replaced regardless of patch version level,” the company’s advisory warned. “Barracuda’s recommendation at this time is full replacement of the impacted ESG.”
In a statement, Barracuda said it will be providing the replacement product to impacted customers at no cost, and that not all ESG appliances were compromised.
“No other Barracuda product, including our SaaS email solutions, were impacted by this vulnerability,” the company said. “If an ESG appliance is displaying a notification in the User Interface, the ESG appliance had indicators of compromise. If no notification is displayed, we have no reason to believe that the appliance has been compromised at this time.”
Nevertheless, the statement says that “out of an abundance of caution and in furtherance of our containment strategy, we recommend impacted customers replace their compromised appliance.”
“As of June 8, 2023, approximately 5% of active ESG appliances worldwide have shown any evidence of known indicators of compromise due to the vulnerability,” the statement continues. “Despite deployment of additional patches based on known IOCs, we continue to see evidence of ongoing malware activity on a subset of the compromised appliances. Therefore, we would like customers to replace any compromised appliance with a new unaffected device.”
Rapid7‘s Caitlin Condon called this remarkable turn of events “fairly stunning,” and said there appear to be roughly 11,000 vulnerable ESG devices still connected to the Internet worldwide.
“The pivot from patch to total replacement of affected devices is fairly stunning and implies the malware the threat actors deployed somehow achieves persistence at a low enough level that even wiping the device wouldn’t eradicate attacker access,” Condon wrote.
Barracuda said the malware was identified on a subset of appliances that allowed the attackers persistent backdoor access to the devices, and that evidence of data exfiltration was identified on some systems.
Rapid7 said it has seen no evidence that attackers are using the flaw to move laterally within victim networks. But that may be small consolation for Barracuda customers now coming to terms with the notion that foreign cyberspies probably have been hoovering up all their email for months.
Nicholas Weaver, a researcher at University of California, Berkeley’s International Computer Science Institute (ICSI), said it is likely that the malware was able to corrupt the underlying firmware that powers the ESG devices in some irreparable way.
“One of the goals of malware is to be hard to remove, and this suggests the malware compromised the firmware itself to make it really hard to remove and really stealthy,” Weaver said. “That’s not a ransomware actor, that’s a state actor. Why? Because a ransomware actor doesn’t care about that level of access. They don’t need it. If they’re going for data extortion, it’s more like a smash-and-grab. If they’re going for data ransoming, they’re encrypting the data itself — not the machines.”
In addition to replacing devices, Barracuda says ESG customers should also rotate any credentials connected to the appliance(s), and check for signs of compromise dating back to at least October 2022 using the network and endpoint indicators the company has released publicly.
Update, June 9, 11:55 a.m. ET: Barracuda has issued an updated statement about the incident, portions of which are now excerpted above.
Microsoft Corp. today released software updates to fix dozens of security vulnerabilities in its Windows operating systems and other software. This month’s relatively light patch load has another added bonus for system administrators everywhere: It appears to be the first Patch Tuesday since March 2022 that isn’t marred by the active exploitation of a zero-day vulnerability in Microsoft’s products.
June’s Patch Tuesday features updates to plug at least 70 security holes, and while none of these are reported by Microsoft as exploited in-the-wild yet, Redmond has flagged several in particular as “more likely to be exploited.”
Top of the list on that front is CVE-2023-29357, which is a “critical” bug in Microsoft SharePoint Server that can be exploited by an unauthenticated attacker on the same network. This SharePoint flaw earned a CVSS rating of 9.8 (10.0 is the most dangerous).
“An attacker able to gain admin access to an internal SharePoint server could do a lot of harm to an organization,” said Kevin Breen, director of cyber threat research at Immersive Labs. “Gaining access to sensitive and privileged documents, stealing and deleting documents as part of a ransomware attack or replacing real documents with malicious copies to further infect users in the organization.”
There are at least three other vulnerabilities fixed this month that earned a collective 9.8 CVSS score, and they all concern a widely-deployed component called the Windows Pragmatic General Multicast (PGM), which is used for delivering multicast data — such as video streaming or online gaming.
Security firm Action1 says all three bugs (CVE-2023-32015, CVE-2023-32014, and CVE-2023-29363) can be exploited over the network without requiring any privileges or user interaction, and affected systems include all versions of Windows Server 2008 and later, as well as Windows 10 and later.
It wouldn’t be a proper Patch Tuesday if we also didn’t also have scary security updates for organizations still using Microsoft Exchange for email. Breen said this month’s Exchange bugs (CVE-2023-32031 and CVE-2023-28310) closely mirror the vulnerabilities identified as part of ProxyNotShell exploits, where an authenticated user in the network could exploit a vulnerability in the Exchange to gain code execution on the server.
Breen said while Microsoft’s patch notes indicate that an attacker must already have gained access to a vulnerable host in the network, this is typically achieved through social engineering attacks with spear phishing to gain initial access to a host before searching for other internal targets.
“Just because your Exchange server doesn’t have internet-facing authentication doesn’t mean it’s protected,” Breen said, noting that Microsoft says the Exchange flaws are not difficult for attackers to exploit.
For a closer look at the patches released by Microsoft today and indexed by severity and other metrics, check out the always-useful Patch Tuesday roundup from the SANS Internet Storm Center. And it’s not a bad idea to hold off updating for a few days until Microsoft works out any kinks in the updates: AskWoody.com usually has the lowdown on any patches that may be causing problems for Windows users.
As always, please consider backing up your system or at least your important documents and data before applying system updates. And if you run into any problems with these updates, please drop a note about it here in the comments.
The U.S. government agency in charge of improving the nation’s cybersecurity posture is ordering all federal agencies to take new measures to restrict access to Internet-exposed networking equipment. The directive comes amid a surge in attacks targeting previously unknown vulnerabilities in widely used security and networking appliances.
Under a new order from the Cybersecurity and Infrastructure Security Agency (CISA), federal agencies will have 14 days to respond to any reports from CISA about misconfigured or Internet-exposed networking equipment. The directive applies to any networking devices — such as firewalls, routers and load balancers — that allow remote authentication or administration.
The order requires federal departments to limit access so that only authorized users on an agency’s local or internal network can reach the management interfaces of these devices. CISA’s mandate follows a slew of recent incidents wherein attackers exploited zero-day flaws in popular networking products to conduct ransomware and cyber espionage attacks on victim organizations.
Earlier today, incident response firm Mandiant revealed that since at least October 2022, Chinese cyber spies have been exploiting a zero-day vulnerability in many email security gateway (ESG) appliances sold by California-based Barracuda Networks to hoover up email from organizations using these devices.
Barracuda was alerted to the exploitation of a zero-day in its products in mid-May, and two days later the company pushed a security update to address the flaw in all affected devices. But last week, Barracuda took the highly unusual step of offering to replace compromised ESGs, evidently in response to malware that altered the systems in such a fundamental way that they could no longer be secured remotely with software updates.
According to Mandiant, a previously unidentified Chinese hacking group was responsible for exploiting the Barracuda flaw, and appeared to be searching through victim organization email records for accounts “belonging to individuals working for a government with political or strategic interest to [China] while this victim government was participating in high-level, diplomatic meetings with other countries.”
When security experts began raising the alarm about a possible zero-day in Barracuda’s products, the Chinese hacking group altered their tactics, techniques and procedures (TTPs) in response to Barracuda’s efforts to contain and remediate the incident, Mandiant found.
Mandiant said the attackers will continue to change their tactics and malware, “especially as network defenders continue to take action against this adversary and their activity is further exposed by the infosec community.”
Meanwhile, this week we learned more details about the ongoing exploitation of a zero-day flaw in a broad range of virtual private networking (VPN) products made by Fortinet — devices many organizations rely on to facilitate remote network access for employees.
On June 11, Fortinet released a half-dozen security updates for its FortiOS firmware, including a weakness that researchers said allows an attacker to run malware on virtually any Fortinet SSL VPN appliance. The researchers found that just being able to reach the management interface for a vulnerable Fortinet SSL VPN appliance was enough to completely compromise the devices.
“This is reachable pre-authentication, on every SSL VPN appliance,” French vulnerability researcher Charles Fol tweeted. “Patch your #Fortigate.”
In details published on June 12, Fortinet confirmed that one of the vulnerabilities (CVE-2023-27997) is being actively exploited. The company said it discovered the weakness in an internal code audit that began in January 2023 — when it learned that Chinese hackers were exploiting a different zero-day flaw in its products.
Shodan.io, the search engine made for finding Internet of Things devices, reports that there are currently more than a half-million vulnerable Fortinet devices reachable via the public Internet.
The new cybersecurity directive from CISA orders agencies to remove any networking device management interfaces from the internet by making them only accessible from an internal enterprise network (CISA recommends an isolated management network). CISA also says agencies should “deploy capabilities, as part of a Zero Trust Architecture, that enforce access control to the interface through a policy enforcement point separate from the interface itself (preferred action).”
Security experts say CISA’s directive highlights the reality that cyberspies and ransomware gangs are making it increasingly risky for organizations to expose any devices to the public Internet, because these groups have strong incentives to probe such devices for previously unknown security vulnerabilities.
The most glaring example of this dynamic can be seen in the frequency with which ransomware groups have discovered and pounced on zero-day flaws in widely-used file transfer applications. One ransomware gang in particular — Cl0p — has repeatedly exploited zero day bugs in various file transfer appliances to extort tens of millions of dollars from hundreds of ransomware victims.
On February 2, KrebsOnSecurity broke the news that attackers were exploiting a zero-day vulnerability in the GoAnywhere file transfer appliance by Fortra. By the time security updates were available to fix the vulnerability, Cl0p had already used it to steal data from more than a hundred organizations running Fortra’s appliance.
According to CISA, on May 27, Cl0p began exploiting a previously unknown flaw in MOVEit Transfer, a popular Internet-facing file transfer application. MOVEit parent Progress Software has since released security updates to address the weakness, but Cl0p claims to have already used it to compromise hundreds of victim organizations. TechCrunch has been tracking the fallout from victim organizations, which range from banks and insurance providers to universities and healthcare entities.
The always on-point weekly security news podcast Risky Business has recently been urging organizations to jettison any and all FTP appliances, noting that Cl0p (or another crime gang) is likely to visit the same treatment on other FTP appliance vendors.
But that sound advice doesn’t exactly scale for mid-tier networking devices like Barracuda ESGs or Fortinet SSL VPNs, which are particularly prominent in small to mid-sized organizations.
“It’s not like FTP services, you can’t tell an enterprise [to] turn off the VPN [because] the productivity hit of disconnecting the VPN is terminal, it’s a non-starter,” Risky Business co-host Adam Boileau said on this week’s show. “So how to mitigate the impact of having to use a domain-joined network appliance at the edge of your network that is going to get zero-day in it? There’s no good answer.”
Risky Business founder Patrick Gray said the COVID-19 pandemic breathed new life into entire classes of networking appliances that rely on code which was never designed with today’s threat models in mind.
“In the years leading up to the pandemic, the push towards identity-aware proxies and zero trust everything and moving away from this type of equipment was gradual, but it was happening,” Gray said. “And then COVID-19 hit and everybody had to go work from home, and there really was one option to get going quickly — which was to deploy VPN concentrators with enterprise features.”
Gray said the security industry had been focused on building the next generation of remote access tools that are more security-hardened, but when the pandemic hit organizations scrambled to cobble together whatever they could.
“The only stuff available in the market was all this old crap that is not QA’d properly, and every time you shake them CVEs fall out,” Gray remarked, calling the pandemic, “a shot in the arm” to companies like Fortinet and Barracuda.
“They sold so many VPNs through the pandemic and this is the hangover,” Gray said. “COVID-19 extended the life of these companies and technologies, and that’s unfortunate.”
If you operate a cybercrime business that relies on disseminating malicious software, you probably also spend a good deal of time trying to disguise or “crypt” your malware so that it appears benign to antivirus and security products. In fact, the process of “crypting” malware is sufficiently complex and time-consuming that most serious cybercrooks will outsource this critical function to a handful of trusted third parties. This story explores the history and identity behind Cryptor[.]biz, a long-running crypting service that is trusted by some of the biggest names in cybercrime.
Virtually all malware that is deployed for use in data stealing at some point needs to be crypted. This highly technical, laborious process involves iteratively altering the appearance and behavior of a malicious file until it no longer sets off alarm bells when scanned by different antivirus tools.
Experienced malware purveyors understand that if they’re not continuously crypting their malware before sending it out, then a lot more of whatever digital disease they are trying to spread is going to get flagged by security tools. In short, if you are running a cybercrime enterprise and you’re not equipped to handle this crypting process yourself, you probably need to pay someone else to do it for you.
Thanks to the high demand for reliable crypting services, there are countless cybercriminals who’ve hung out their shingles as crypting service providers. However, most of these people do not appear to be very good at what they do, because most are soon out of business.
One standout is Cryptor[.]biz. This service is actually recommended by the purveyors of the RedLine information stealer malware, which is a popular and powerful malware kit that specializes in stealing victim data and is often used to lay the groundwork for ransomware attacks. Cryptor[.]biz also has been recommended to customers of the Vidar information stealer malware family (via the malware’s Telegram support channels).
As good as Cryptor[.]biz may be at obfuscating malware, its proprietor does not appear to have done a great job covering his own tracks. The registration records for the website Cryptor[.]biz are hidden behind privacy protection services, but the site’s homepage says potential customers should register by visiting the domain crypt[.]guru, or by sending a Jabber instant message to the address “masscrypt@exploit.im.”
Crypt[.]guru’s registration records also are hidden, yet passive domain name system (DNS) records for both cryptor[.]biz and crypt[.]guru show that in 2018 the domains were forwarding incoming email to the address obelisk57@gmail.com.
Cyber intelligence firm Intel 471 reports that obelisk57@gmail.com was used to register an account on the forum Blacksoftware under the nickname “Kerens.” Meanwhile, the Jabber address masscrypt@exploit.im has been associated with the user Kerens on the Russian hacking forum Exploit from 2011 to the present day.
The login page for Cryptor dot biz contains several clues about who runs the service.
The very first post by Kerens on Exploit in 2011 was a negative review of a popular crypting service that predated Cryptor[.]biz called VIP Crypt, which Kerens accused of being “shitty” and unreliable. But Intel 471 finds that after his critical review of VIP Crypt, Kerens did not post publicly on Exploit again for another four years until October 2016, when they suddenly began advertising Cryptor[.]biz.
Intel 471 found that Kerens used the email address pepyak@gmail.com, which also was used to register Kerens accounts on the Russian language hacking forums Verified and Damagelab.
Ironically, Verified has itself been hacked multiple times over the years, with its private messages and user registration details leaked online. Those records indicate the user Kerens registered on Verified in March 2009 from an Internet address in Novosibirsk, a city in the southern Siberian region of Russia.
In 2010, someone with the username Pepyak on the Russian language affiliate forum GoFuckBiz[.]com shared that they typically split their time during the year between living in Siberia (during the milder months) and Thailand (when Novosibirsk is typically -15 °C/°5F).
For example, in one conversation about the best car to buy for navigating shoddy roads, Pepyak declared, “We have shitty roads in Siberia.” In January 2010, Pepyak asked the GoFuckBiz community where one might find a good USB-based modem in Phuket, Thailand.
DomainTools.com says the email address pepyak@gmail.com was used to register 28 domain names over the years, including a now-defunct Russian automobile sales website called “autodoska[.]biz.” DomainTools shows this website was registered in 2008 to a Yuri Churnov from Sevastpol, Crimea (prior to Russia’s annexation of Crimea in 2014, the peninsula was part of Ukraine).
The WHOIS records for autodoska[.]biz were changed in 2010 to Sergey Purtov (pepyak@gmail.com) from Yurga, a town in Russia’s Kemerovo Oblast, which is a relatively populous area in Western Siberia that is adjacent to Novosibirsk.
A satellite view of the region including Novosibirsk, Yurga and Kemerovo Oblast. Image: Google Maps.
Many of the 28 domains registered to pepyak@gmail.com have another email address in their registration records: unforgiven57@mail.ru. According to DomainTools, the Unforgiven email address was used to register roughly a dozen domains, including three that were originally registered to Keren’s email address — pepyak@gmail.com (e.g., antivirusxp09[.]com).
One of the domains registered in 2006 to the address unforgiven57@mail.ru was thelib[.]ru, which for many years was a place to download pirated e-books. DomainTools says thelib[.]ru was originally registered to a Sergey U Purtov.
Most of the two-dozen domains registered to pepyak@gmail.com shared a server at one point with a small number of other domains, including mobile-soft[.]su, which was registered to the email address spurtov@gmail.com.
CDEK, an express delivery company based in Novosibirsk, was apparently hacked at some point because cyber intelligence firm Constella Intelligence found that its database shows the email address spurtov@gmail.com was assigned to a Sergey Yurievich Purtov (Сергей Юрьевич Пуртов).
DomainTools says the same phone number in the registration records for autodoska[.]biz (+7.9235059268) was used to secure two other domains — bile[.]ru and thelibrary[.]ru, both of which were registered to a Sergey Y Purtov.
A search on the phone number 79235059268 in Skype reveals these digits belong to a “Sergey” from Novosibirsk with the now-familiar username — Pepyak.
Bringing things full circle, Constella Intelligence shows that various online accounts tied to the email address unforgiven57@mail.ru frequently relied on the somewhat unique password, “plk139t51z.” Constella says that same password was used for just a handful of other email addresses, including gumboldt@gmail.com.
Hacked customer records from CDEK show gumboldt@gmail.com was tied to a customer named Sergey Yurievich Purtov. DomainTools found that virtually all of the 15 domain names registered to gumboldt@gmail.com (including the aforementioned mobile-soft[.]su) were at one point registered to spurtov@gmail.com.
Intel 471 reports that gumboldt@gmail.com was used in 2009 to register a user by the nickname “Kolumb” on the Russian hacking forum Antichat. From Kolumb’s posts on Antichat, it seems this user was mostly interested in buying access to compromised computers inside of Russia.
Then in December 2009, Kolumb said they were in desperate need of a reliable crypting service or full-time cryptor.
“We need a person who will crypt software every day, sometimes even a couple of times a day,” Kolumb wrote on Antichat.
Mr. Purtov did not respond to requests for comment sent to any of the email addresses referenced in this report. Mail.ru responded that the email address spurtov@mail.ru is no longer active.
As KrebsOnSecurity opined on Mastodon earlier this week, it makes a lot of sense for cybersecurity researchers and law enforcement alike to focus attention on the top players in the crypting space — for several reasons. Most critically, the cybercriminals offering time-tested crypting services also tend to be among the most experienced and connected malicious coders on the planet.
Think of it this way: By definition, a crypting service scans and examines all types of malware before those new nasties are first set loose in the wild. This fact alone should make these criminal enterprises a primary target of cybersecurity firms looking to gain more timely intelligence about new malware.
Also, a review of countless posts and private messages from Pepyak and other crypting providers shows that a successful crypting service will have direct and frequent contact with some of the world’s most advanced malware authors.
In short, infiltrating or disrupting a trusted crypting service can be an excellent way to slow down or even sideline a large number of cybercrime operations all at once.
Further reading on the crypting industry:
This Service Helps Malware Authors Fix Flaws in Their Code
Antivirus is Dead: Long Live Antivirus!
Microsoft Corp. today released software updates to quash 130 security bugs in its Windows operating systems and related software, including at least five flaws that are already seeing active exploitation. Meanwhile, Apple customers have their own zero-day woes again this month: On Monday, Apple issued (and then quickly pulled) an emergency update to fix a zero-day vulnerability that is being exploited on MacOS and iOS devices.
On July 10, Apple pushed a “Rapid Security Response” update to fix a code execution flaw in the Webkit browser component built into iOS, iPadOS, and macOS Ventura. Almost as soon as the patch went out, Apple pulled the software because it was reportedly causing problems loading certain websites. MacRumors says Apple will likely re-release the patches when the glitches have been addressed.
Launched in May, Apple’s Rapid Security Response updates are designed to address time-sensitive vulnerabilities, and this is the second month Apple has used it. July marks the sixth month this year that Apple has released updates for zero-day vulnerabilities — those that get exploited by malware or malcontents before there is an official patch available.
If you rely on Apple devices and don’t have automatic updates enabled, please take a moment to check the patch status of your various iDevices. The latest security update that includes the fix for the zero-day bug should be available in iOS/iPadOS 16.5.1, macOS 13.4.1, and Safari 16.5.2.
On the Windows side, there are at least four vulnerabilities patched this month that earned high CVSS (badness) scores and that are already being exploited in active attacks, according to Microsoft. They include CVE-2023-32049, which is a hole in Windows SmartScreen that lets malware bypass security warning prompts; and CVE-2023-35311 allows attackers to bypass security features in Microsoft Outlook.
The two other zero-day threats this month for Windows are both privilege escalation flaws. CVE-2023-32046 affects a core Windows component called MSHTML, which is used by Windows and other applications, like Office, Outlook and Skype. CVE-2023-36874 is an elevation of privilege bug in the Windows Error Reporting Service.
Many security experts expected Microsoft to address a fifth zero-day flaw — CVE-2023-36884 — a remote code execution weakness in Office and Windows.
“Surprisingly, there is no patch yet for one of the five zero-day vulnerabilities,” said Adam Barnett, lead software engineer at Rapid7. “Microsoft is actively investigating publicly disclosed vulnerability, and promises to update the advisory as soon as further guidance is available.”
Barnett notes that Microsoft links exploitation of this vulnerability with Storm-0978, the software giant’s name for a cybercriminal group based out of Russia that is identified by the broader security community as RomCom.
“Exploitation of CVE-2023-36884 may lead to installation of the eponymous RomCom trojan or other malware,” Barnett said. “[Microsoft] suggests that RomCom / Storm-0978 is operating in support of Russian intelligence operations. The same threat actor has also been associated with ransomware attacks targeting a wide array of victims.”
Microsoft’s advisory on CVE-2023-36884 is pretty sparse, but it does include a Windows registry hack that should help mitigate attacks on this vulnerability. Microsoft has also published a blog post about phishing campaigns tied to Storm-0978 and to the exploitation of this flaw.
Barnett said it’s while it’s possible that a patch will be issued as part of next month’s Patch Tuesday, Microsoft Office is deployed just about everywhere, and this threat actor is making waves.
“Admins should be ready for an out-of-cycle security update for CVE-2023-36884,” he said.
Microsoft also today released new details about how it plans to address the existential threat of malware that is cryptographically signed by…wait for it….Microsoft.
In late 2022, security experts at Sophos, Trend Micro and Cisco warned that ransomware criminals were using signed, malicious drivers in an attempt to evade antivirus and endpoint detection and response (EDR) tools.
In a blog post today, Sophos’s Andrew Brandt wrote that Sophos identified 133 malicious Windows driver files that were digitally signed since April 2021, and found 100 of those were actually signed by Microsoft. Microsoft said today it is taking steps to ensure those malicious driver files can no longer run on Windows computers.
As KrebsOnSecurity noted in last month’s story on malware signing-as-a-service, code-signing certificates are supposed to help authenticate the identity of software publishers, and provide cryptographic assurance that a signed piece of software has not been altered or tampered with. Both of these qualities make stolen or ill-gotten code-signing certificates attractive to cybercriminal groups, who prize their ability to add stealth and longevity to malicious software.
Dan Goodin at Ars Technica contends that whatever Microsoft may be doing to keep maliciously signed drivers from running on Windows is being bypassed by hackers using open source software that is popular with video game cheaters.
“The software comes in the form of two software tools that are available on GitHub,” Goodin explained. “Cheaters use them to digitally sign malicious system drivers so they can modify video games in ways that give the player an unfair advantage. The drivers clear the considerable hurdle required for the cheat code to run inside the Windows kernel, the fortified layer of the operating system reserved for the most critical and sensitive functions.”
Meanwhile, researchers at Cisco’s Talos security team found multiple Chinese-speaking threat groups have repurposed the tools—one apparently called “HookSignTool” and the other “FuckCertVerifyTimeValidity.”
“Instead of using the kernel access for cheating, the threat actors use it to give their malware capabilities it wouldn’t otherwise have,” Goodin said.
For a closer look at the patches released by Microsoft today, check out the always-thorough Patch Tuesday roundup from the SANS Internet Storm Center. And it’s not a bad idea to hold off updating for a few days until Microsoft works out any kinks in the updates: AskWoody.com usually has the lowdown on any patches that may be causing problems for Windows users.
And as ever, please consider backing up your system or at least your important documents and data before applying system updates. If you encounter any problems with these updates, please drop a note about it here in the comments.
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