Login
Thread hijacking attacks. They happen when someone you know has their email account compromised, and you are suddenly dropped into an existing conversation between the sender and someone else. These missives draw on the recipient’s natural curiosity about being copied on a private discussion, which is modified to include a malicious link or attachment. Here’s the story of a thread hijacking attack in which a journalist was copied on a phishing email from the unwilling subject of a recent scoop.
In Sept. 2023, the Pennsylvania news outlet LancasterOnline.com published a story about Adam Kidan, a wealthy businessman with a criminal past who is a major donor to Republican causes and candidates, including Rep. Lloyd Smucker (R-Pa).
The LancasterOnline story about Adam Kidan.
Several months after that piece ran, the story’s author Brett Sholtis received two emails from Kidan, both of which contained attachments. One of the messages appeared to be a lengthy conversation between Kidan and a colleague, with the subject line, “Re: Successfully sent data.” The second missive was a more brief email from Kidan with the subject, “Acknowledge New Work Order,” and a message that read simply, “Please find the attached.”
Sholtis said he clicked the attachment in one of the messages, which then launched a web page that looked exactly like a Microsoft Office 365 login page. An analysis of the webpage reveals it would check any submitted credentials at the real Microsoft website, and return an error if the user entered bogus account information. A successful login would record the submitted credentials and forward the victim to the real Microsoft website.
But Sholtis said he didn’t enter his Outlook username and password. Instead, he forwarded the messages to LancasterOneline’s IT team, which quickly flagged them as phishing attempts.
LancasterOnline Executive Editor Tom Murse said the two phishing messages from Mr. Kidan raised eyebrows in the newsroom because Kidan had threatened to sue the news outlet multiple times over Sholtis’s story.
“We were just perplexed,” Murse said. “It seemed to be a phishing attempt but we were confused why it would come from a prominent businessman we’ve written about. Our initial response was confusion, but we didn’t know what else to do with it other than to send it to the FBI.”
The phishing lure attached to the thread hijacking email from Mr. Kidan.
In 2006, Kidan was sentenced to 70 months in federal prison after pleading guilty to defrauding lenders along with Jack Abramoff, the disgraced lobbyist whose corruption became a symbol of the excesses of Washington influence peddling. He was paroled in 2009, and in 2014 moved his family to a home in Lancaster County, Pa.
The FBI hasn’t responded to LancasterOnline’s tip. Messages sent by KrebsOnSecurity to Kidan’s emails addresses were returned as blocked. Messages left with Mr. Kidan’s company, Empire Workforce Solutions, went unreturned.
No doubt the FBI saw the messages from Kidan for what they likely were: The result of Mr. Kidan having his Microsoft Outlook account compromised and used to send malicious email to people in his contacts list.
Thread hijacking attacks are hardly new, but that is mainly true because many Internet users still don’t know how to identify them. The email security firm Proofpoint says it has tracked north of 90 million malicious messages in the last five years that leverage this attack method.
One key reason thread hijacking is so successful is that these attacks generally do not include the tell that exposes most phishing scams: A fabricated sense of urgency. A majority of phishing threats warn of negative consequences should you fail to act quickly — such as an account suspension or an unauthorized high-dollar charge going through.
In contrast, thread hijacking campaigns tend to patiently prey on the natural curiosity of the recipient.
Ryan Kalember, chief strategy officer at Proofpoint, said probably the most ubiquitous examples of thread hijacking are “CEO fraud” or “business email compromise” scams, wherein employees are tricked by an email from a senior executive into wiring millions of dollars to fraudsters overseas.
But Kalember said these low-tech attacks can nevertheless be quite effective because they tend to catch people off-guard.
“It works because you feel like you’re suddenly included in an important conversation,” Kalember said. “It just registers a lot differently when people start reading, because you think you’re observing a private conversation between two different people.”
Some thread hijacking attacks actually involve multiple threat actors who are actively conversing while copying — but not addressing — the recipient.
“We call these multi-persona phishing scams, and they’re often paired with thread hijacking,” Kalember said. “It’s basically a way to build a little more affinity than just copying people on an email. And the longer the conversation goes on, the higher their success rate seems to be because some people start replying to the thread [and participating] psycho-socially.”
The best advice to sidestep phishing scams is to avoid clicking on links or attachments that arrive unbidden in emails, text messages and other mediums. If you’re unsure whether the message is legitimate, take a deep breath and visit the site or service in question manually — ideally, using a browser bookmark so as to avoid potential typosquatting sites.
Apple and Microsoft recently released software updates to fix dozens of security holes in their operating systems. Microsoft today patched at least 60 vulnerabilities in its Windows OS. Meanwhile, Apple’s new macOS Sonoma addresses at least 68 security weaknesses, and its latest update for iOS fixes two zero-day flaws.
Last week, Apple pushed out an urgent software update to its flagship iOS platform, warning that there were at least two zero-day exploits for vulnerabilities being used in the wild (CVE-2024-23225 and CVE-2024-23296). The security updates are available in iOS 17.4, iPadOS 17.4, and iOS 16.7.6.
Apple’s macOS Sonoma 14.4 Security Update addresses dozens of security issues. Jason Kitka, chief information security officer at Automox, said the vulnerabilities patched in this update often stem from memory safety issues, a concern that has led to a broader industry conversation about the adoption of memory-safe programming languages [full disclosure: Automox is an advertiser on this site].
On Feb. 26, 2024, the Biden administration issued a report that calls for greater adoption of memory-safe programming languages. On Mar. 4, 2024, Google published Secure by Design, which lays out the company’s perspective on memory safety risks.
Mercifully, there do not appear to be any zero-day threats hounding Windows users this month (at least not yet). Satnam Narang, senior staff research engineer at Tenable, notes that of the 60 CVEs in this month’s Patch Tuesday release, only six are considered “more likely to be exploited” according to Microsoft.
Those more likely to be exploited bugs are mostly “elevation of privilege vulnerabilities” including CVE-2024-26182 (Windows Kernel), CVE-2024-26170 (Windows Composite Image File System (CimFS), CVE-2024-21437 (Windows Graphics Component), and CVE-2024-21433 (Windows Print Spooler).
Narang highlighted CVE-2024-21390 as a particularly interesting vulnerability in this month’s Patch Tuesday release, which is an elevation of privilege flaw in Microsoft Authenticator, the software giant’s app for multi-factor authentication. Narang said a prerequisite for an attacker to exploit this flaw is to already have a presence on the device either through malware or a malicious application.
“If a victim has closed and re-opened the Microsoft Authenticator app, an attacker could obtain multi-factor authentication codes and modify or delete accounts from the app,” Narang said. “Having access to a target device is bad enough as they can monitor keystrokes, steal data and redirect users to phishing websites, but if the goal is to remain stealth, they could maintain this access and steal multi-factor authentication codes in order to login to sensitive accounts, steal data or hijack the accounts altogether by changing passwords and replacing the multi-factor authentication device, effectively locking the user out of their accounts.”
CVE-2024-21334 earned a CVSS (danger) score of 9.8 (10 is the worst), and it concerns a weakness in Open Management Infrastructure (OMI), a Linux-based cloud infrastructure in Microsoft Azure. Microsoft says attackers could connect to OMI instances over the Internet without authentication, and then send specially crafted data packets to gain remote code execution on the host device.
CVE-2024-21435 is a CVSS 8.8 vulnerability in Windows OLE, which acts as a kind of backbone for a great deal of communication between applications that people use every day on Windows, said Ben McCarthy, lead cybersecurity engineer at Immersive Labs.
“With this vulnerability, there is an exploit that allows remote code execution, the attacker needs to trick a user into opening a document, this document will exploit the OLE engine to download a malicious DLL to gain code execution on the system,” Breen explained. “The attack complexity has been described as low meaning there is less of a barrier to entry for attackers.”
A full list of the vulnerabilities addressed by Microsoft this month is available at the SANS Internet Storm Center, which breaks down the updates by severity and urgency.
Finally, Adobe today issued security updates that fix dozens of security holes in a wide range of products, including Adobe Experience Manager, Adobe Premiere Pro, ColdFusion 2023 and 2021, Adobe Bridge, Lightroom, and Adobe Animate. Adobe said it is not aware of active exploitation against any of the flaws.
By the way, Adobe recently enrolled all of its Acrobat users into a “new generative AI feature” that scans the contents of your PDFs so that its new “AI Assistant” can “understand your questions and provide responses based on the content of your PDF file.” Adobe provides instructions on how to disable the AI features and opt out here.
Related tags
Three Americans were charged this week with stealing more than $400 million in a November 2022 SIM-swapping attack. The U.S. government did not name the victim organization, but there is every indication that the money was stolen from the now-defunct cryptocurrency exchange FTX, which had just filed for bankruptcy on that same day.
A graphic illustrating the flow of more than $400 million in cryptocurrencies stolen from FTX on Nov. 11-12, 2022. Image: Elliptic.co.
An indictment unsealed this week and first reported on by Ars Technica alleges that Chicago man Robert Powell, a.k.a. “R,” “R$” and “ElSwapo1,” was the ringleader of a SIM-swapping group called the “Powell SIM Swapping Crew.” Colorado resident Emily “Em” Hernandez allegedly helped the group gain access to victim devices in service of SIM-swapping attacks between March 2021 and April 2023. Indiana resident Carter Rohn, a.k.a. “Carti,” and “Punslayer,” allegedly assisted in compromising devices.
In a SIM-swapping attack, the crooks transfer the target’s phone number to a device they control, allowing them to intercept any text messages or phone calls sent to the victim, including one-time passcodes for authentication or password reset links sent via SMS.
The indictment states that the perpetrators in this heist stole the $400 million in cryptocurrencies on Nov. 11, 2022 after they SIM-swapped an AT&T customer by impersonating them at a retail store using a fake ID. However, the document refers to the victim in this case only by the name “Victim 1.”
Wired’s Andy Greenberg recently wrote about FTX’s all-night race to stop a $1 billion crypto heist that occurred on the evening of November 11:
“FTX’s staff had already endured one of the worst days in the company’s short life. What had recently been one of the world’s top cryptocurrency exchanges, valued at $32 billion only 10 months earlier, had just declared bankruptcy. Executives had, after an extended struggle, persuaded the company’s CEO, Sam Bankman-Fried, to hand over the reins to John Ray III, a new chief executive now tasked with shepherding the company through a nightmarish thicket of debts, many of which it seemed to have no means to pay.”
“FTX had, it seemed, hit rock bottom. Until someone—a thief or thieves who have yet to be identified—chose that particular moment to make things far worse. That Friday evening, exhausted FTX staffers began to see mysterious outflows of the company’s cryptocurrency, publicly captured on the Etherscan website that tracks the Ethereum blockchain, representing hundreds of millions of dollars worth of crypto being stolen in real time.”
The indictment says the $400 million was stolen over several hours between November 11 and 12, 2022. Tom Robinson, co-founder of the blockchain intelligence firm Elliptic, said the attackers in the FTX heist began to drain FTX wallets on the evening of Nov. 11, 2022 local time, and continuing until the 12th of November.
Robinson said Elliptic is not aware of any other crypto heists of that magnitude occurring on that date.
“We put the value of the cryptoassets stolen at $477 million,” Robinson said. “The FTX administrators have reported overall losses due to “unauthorized third-party transfers” of $413 million – the discrepancy is likely due to subsequent seizure and return of some of the stolen assets. Either way, it’s certainly over $400 million, and we are not aware of any other thefts from crypto exchanges on this scale, on this date.”
The SIM-swappers allegedly responsible for the $400 million crypto theft are all U.S. residents. But there are some indications they had help from organized cybercriminals based in Russia. In October 2023, Elliptic released a report that found the money stolen from FTX had been laundered through exchanges with ties to criminal groups based in Russia.
“A Russia-linked actor seems a stronger possibility,” Elliptic wrote. “Of the stolen assets that can be traced through ChipMixer, significant amounts are combined with funds from Russia-linked criminal groups, including ransomware gangs and darknet markets, before being sent to exchanges. This points to the involvement of a broker or other intermediary with a nexus in Russia.”
Nick Bax, director of analytics at the cryptocurrency wallet recovery firm Unciphered, said the flow of stolen FTX funds looks more like what his team has seen from groups based in Eastern Europe and Russian than anything they’ve witnessed from US-based SIM-swappers.
“I was a bit surprised by this development but it seems to be consistent with reports from CISA [the Cybersecurity and Infrastructure Security Agency] and others that “Scattered Spider” has worked with [ransomware] groups like ALPHV/BlackCat,” Bax said.
CISA’s alert on Scattered Spider says they are a cybercriminal group that targets large companies and their contracted information technology (IT) help desks.
“Scattered Spider threat actors, per trusted third parties, have typically engaged in data theft for extortion and have also been known to utilize BlackCat/ALPHV ransomware alongside their usual TTPs,” CISA said, referring to the group’s signature “Tactics, Techniques an Procedures.”
Nick Bax, posting on Twitter/X in Nov 2022 about his research on the $400 million FTX heist.
Earlier this week, KrebsOnSecurity published a story noting that a Florida man recently charged with being part of a SIM-swapping conspiracy is thought to be a key member of Scattered Spider, a hacking group also known as 0ktapus. That group has been blamed for a string of cyber intrusions at major U.S. technology companies during the summer of 2022.
Financial claims involving FTX’s bankruptcy proceedings are being handled by the financial and risk consulting giant Kroll. In August 2023, Kroll suffered its own breach after a Kroll employee was SIM-swapped. According to Kroll, the thieves stole user information for multiple cryptocurrency platforms that rely on Kroll services to handle bankruptcy proceedings.
KrebsOnSecurity sought comment for this story from Kroll, the FBI, the prosecuting attorneys, and Sullivan & Cromwell, the law firm handling the FTX bankruptcy. This story will be updated in the event any of them respond.
Attorneys for Mr. Powell said they do not know who Victim 1 is in the indictment, as the government hasn’t shared that information yet. Powell’s next court date is a detention hearing on Feb. 2, 2024.
Update, Feb. 3, 12:19 p.m. ET: The FBI declined a request to comment.
Google continues to struggle with cybercriminals running malicious ads on its search platform to trick people into downloading booby-trapped copies of popular free software applications. The malicious ads, which appear above organic search results and often precede links to legitimate sources of the same software, can make searching for software on Google a dicey affair.
Google says keeping users safe is a top priority, and that the company has a team of thousands working around the clock to create and enforce their abuse policies. And by most accounts, the threat from bad ads leading to backdoored software has subsided significantly compared to a year ago.
But cybercrooks are constantly figuring out ingenious ways to fly beneath Google’s anti-abuse radar, and new examples of bad ads leading to malware are still too common.
For example, a Google search earlier this week for the free graphic design program FreeCAD produced the following result, which shows that a “Sponsored” ad at the top of the search results is advertising the software available from freecad-us[.]org. Although this website claims to be the official FreeCAD website, that honor belongs to the result directly below — the legitimate freecad.org.
How do we know freecad-us[.]org is malicious? A review at DomainTools.com show this domain is the newest (registered Jan. 19, 2024) of more than 200 domains at the Internet address 93.190.143[.]252 that are confusingly similar to popular software titles, including dashlane-project[.]com, filezillasoft[.]com, keepermanager[.]com, and libreofficeproject[.]com.
Some of the domains at this Netherlands host appear to be little more than software review websites that steal content from established information sources in the IT world, including Gartner, PCWorld, Slashdot and TechRadar.
Other domains at 93.190.143[.]252 do serve actual software downloads, but none of them are likely to be malicious if one visits the sites through direct navigation. If one visits openai-project[.]org and downloads a copy of the popular Windows desktop management application Rainmeter, for example, the file that is downloaded has the same exact file signature as the real Rainmeter installer available from rainmeter.net.
But this is only a ruse, says Tom Hegel, principal threat researcher at the security firm Sentinel One. Hegel has been tracking these malicious domains for more than a year, and he said the seemingly benign software download sites will periodically turn evil, swapping out legitimate copies of popular software titles with backdoored versions that will allow cybercriminals to remotely commander the systems.
“They’re using automation to pull in fake content, and they’re rotating in and out of hosting malware,” Hegel said, noting that the malicious downloads may only be offered to visitors who come from specific geographic locations, like the United States. “In the malicious ad campaigns we’ve seen tied to this group, they would wait until the domains gain legitimacy on the search engines, and then flip the page for a day or so and then flip back.”
In February 2023, Hegel co-authored a report on this same network, which Sentinel One has dubbed MalVirt (a play on “malvertising”). They concluded that the surge in malicious ads spoofing various software products was directly responsible for a surge in malware infections from infostealer trojans like IcedID, Redline Stealer, Formbook and AuroraStealer.
Hegel noted that the spike in malicious software-themed ads came not long after Microsoft started blocking by default Office macros in documents downloaded from the Internet. He said the volume of the current malicious ad campaigns from this group appears to be relatively low compared to a year ago.
“It appears to be same campaign continuing,” Hegel said. “Last January, every Google search for ‘Autocad’ led to something bad. Now, it’s like they’re paying Google to get one out of every dozen of searches. My guess it’s still continuing because of the up-and-down [of the] domains hosting malware and then looking legitimate.”
Several of the websites at this Netherlands host (93.190.143[.]252) are currently blocked by Google’s Safebrowsing technology, and labeled with a conspicuous red warning saying the website will try to foist malware on visitors who ignore the warning and continue.
But it remains a mystery why Google has not similarly blocked more than 240+ other domains at this same host, or else removed them from its search index entirely. Especially considering there is nothing else but these domains hosted at that Netherlands IP address, and because they have all remained at that address for the past year.
In response to questions from KrebsOnSecurity, Google said maintaining a safe ads ecosystem and keeping malware off of its platforms is a priority across Google.
“Bad actors often employ sophisticated measures to conceal their identities and evade our policies and enforcement, sometimes showing Google one thing and users something else,” Google said in a written statement. “We’ve reviewed the ads in question, removed those that violated our policies, and suspended the associated accounts. We’ll continue to monitor and apply our protections.”
Google says it removed 5.2 billion ads in 2022, and restricted more than 4.3 billion ads and suspended over 6.7 million advertiser accounts. The company’s latest ad safety report says Google in 2022 blocked or removed 1.36 billion advertisements for violating its abuse policies.
Some of the domains referenced in this story were included in Sentinel One’s February 2023 report, but dozens more have been added since, such as those spoofing the official download sites for Corel Draw, Github Desktop, Roboform and Teamviewer.
This October 2023 report on the FreeCAD user forum came from a user who reported downloading a copy of the software from freecadsoft[.]com after seeing the site promoted at the top of a Google search result for “freecad.” Almost a month later, another FreeCAD user reported getting stung by the same scam.
“This got me,” FreeCAD forum user “Matterform” wrote on Nov. 19, 2023. “Please leave a report with Google so it can flag it. They paid Google for sponsored posts.”
Sentinel One’s report didn’t delve into the “who” behind this ongoing MalVirt campaign, and there are precious few clues that point to attribution. All of the domains in question were registered through webnic.cc, and several of them display a placeholder page saying the site is ready for content. Viewing the HTML source of these placeholder pages shows many of the hidden comments in the code are in Cyrillic.
Trying to track the crooks using Google’s Ad Transparency tools didn’t lead far. The ad transparency record for the malicious ad featuring freecad-us[.]org (in the screenshot above) shows that the advertising account used to pay for the ad has only run one previous ad through Google search: It advertised a wedding photography website in New Zealand.
The apparent owner of that photography website did not respond to requests for comment, but it’s also likely his Google advertising account was hacked and used to run these malicious ads.
The victim shaming site operated by the Snatch ransomware group is leaking data about its true online location and internal operations, as well as the Internet addresses of its visitors, KrebsOnSecurity has found. The leaked data suggest that Snatch is one of several ransomware groups using paid ads on Google.com to trick people into installing malware disguised as popular free software, such as Microsoft Teams, Adobe Reader, Mozilla Thunderbird, and Discord.
First spotted in 2018, the Snatch ransomware group has published data stolen from hundreds of organizations that refused to pay a ransom demand. Snatch publishes its stolen data at a website on the open Internet, and that content is mirrored on the Snatch team’s darknet site, which is only reachable using the global anonymity network Tor.
The victim shaming website for the Snatch ransomware gang.
KrebsOnSecurity has learned that Snatch’s darknet site exposes its “server status” page, which includes information about the true Internet addresses of users accessing the website.
Refreshing this page every few seconds shows that the Snatch darknet site generates a decent amount of traffic, often attracting thousands of visitors each day. But by far the most frequent repeat visitors are coming from Internet addresses in Russia that either currently host Snatch’s clear web domain names or recently did.
The Snatch ransomware gang’s victim shaming site on the darknet is leaking data about its visitors. This “server status” page says that Snatch’s website is on Central European Summer Time (CEST) and is powered by OpenSSL/1.1.1f, which is no longer supported by security updates.
Probably the most active Internet address accessing Snatch’s darknet site is 193.108.114[.]41, which is a server in Yekaterinburg, Russia that hosts several Snatch domains, including snatchteam[.]top, sntech2ch[.]top, dwhyj2[.]top and sn76930193ch[.]top. It could well be that this Internet address is showing up frequently because Snatch’s clear-web site features a toggle button at the top that lets visitors switch over to accessing the site via Tor.
Another Internet address that showed up frequently in the Snatch server status page was 194.168.175[.]226, currently assigned to Matrix Telekom in Russia. According to DomainTools.com, this address also hosts or else recently hosted the usual coterie of Snatch domains, as well as quite a few domains phishing known brands such as Amazon and Cashapp.
The Moscow Internet address 80.66.64[.]15 accessed the Snatch darknet site all day long, and that address also housed the appropriate Snatch clear-web domains. More interestingly, that address is home to multiple recent domains that appear confusingly similar to known software companies, including libreoff1ce[.]com and www-discord[.]com.
This is interesting because the phishing domains associated with the Snatch ransomware gang were all registered to the same Russian name — Mihail Kolesnikov, a name that is somewhat synonymous with recent phishing domains tied to malicious Google ads.
Kolesnikov could be a nod to a Russian general made famous during Boris Yeltsin’s reign. Either way, it’s clearly a pseudonym, but there are some other commonalities among these domains that may provide insight into how Snatch and other ransomware groups are sourcing their victims.
DomainTools says there are more than 1,300 current and former domain names registered to Mihail Kolesnikov between 2013 and July 2023. About half of the domains appear to be older websites advertising female escort services in major cities around the United States (e.g. the now-defunct pittsburghcitygirls[.]com).
The other half of the Kolesnikov websites are far more recent phishing domains mostly ending in “.top” and “.app” that appear designed to mimic the domains of major software companies, including www-citrix[.]top, www-microsofteams[.]top, www-fortinet[.]top, ibreoffice[.]top, www-docker[.]top, www-basecamp[.]top, ccleaner-cdn[.]top, adobeusa[.]top, and www.real-vnc[.]top.
In August 2023, researchers with Trustwave Spiderlabs said they encountered domains registered to Mihail Kolesnikov being used to disseminate the Rilide information stealer trojan.
But it appears multiple crime groups may be using these domains to phish people and disseminate all kinds of information-stealing malware. In February 2023, Spamhaus warned of a huge surge in malicious ads that were hijacking search results in Google.com, and being used to distribute at least five different families of information stealing trojans, including AuroraStealer, IcedID/Bokbot, Meta Stealer, RedLine Stealer and Vidar.
For example, Spamhaus said victims of these malicious ads would search for Microsoft Teams in Google.com, and the search engine would often return a paid ad spoofing Microsoft or Microsoft Teams as the first result — above all other results. The malicious ad would include a logo for Microsoft and at first glance appear to be a safe and trusted place to download the Microsoft Teams client.
However, anyone who clicked on the result was whisked away instead to mlcrosofteams-us[.]top — yet another malicious domain registered to Mr. Kolesnikov. And while visitors to this website may believe they are only downloading the Microsoft Teams client, the installer file includes a copy of the IcedID malware, which is really good at stealing passwords and authentication tokens from the victim’s web browser.
Image: Spamhaus
The founder of the Swiss anti-abuse website abuse.ch told Spamhaus it is likely that some cybercriminals have started to sell “malvertising as a service” on the dark web, and that there is a great deal of demand for this service.
In other words, someone appears to have built a very profitable business churning out and promoting new software-themed phishing domains and selling that as a service to other cybercriminals. Or perhaps they are simply selling any stolen data (and any corporate access) to active and hungry ransomware group affiliates.
The tip about the exposed “server status” page on the Snatch darkweb site came from @htmalgae, the same security researcher who alerted KrebsOnSecurity earlier this month that the darknet victim shaming site run by the 8Base ransomware gang was inadvertently left in development mode.
That oversight revealed not only the true Internet address of the hidden 8Base site (in Russia, naturally), but also the identity of a programmer in Moldova who apparently helped to develop the 8Base code.
@htmalgae said the idea of a ransomware group’s victim shaming site leaking data that they did not intend to expose is deliciously ironic.
“This is a criminal group that shames others for not protecting user data,” @htmalgae said. “And here they are leaking their user data.”
All of the malware mentioned in this story is designed to run on Microsoft Windows devices. But Malwarebytes recently covered the emergence of a Mac-based information stealer trojan called AtomicStealer that was being advertised through malicious Google ads and domains that were confusingly similar to software brands.
Please be extra careful when you are searching online for popular software titles. Cracked, pirated copies of major software titles are a frequent source of infostealer infections, as are these rogue ads masquerading as search results. Make sure to double-check you are actually at the domain you believe you’re visiting *before* you download and install anything.
Stay tuned for Part II of this post, which includes a closer look at the Snatch ransomware group and their founder.
Further reading:
@HTMalgae’s list of the top Internet addresses seen accessing Snatch’s darknet site
Ars Technica: Until Further Notice Think Twice Before Using Google to Download Software
Bleeping Computer: Hackers Abuse Google Ads to Spread Malware in Legit Software
Microsoft today issued software updates to fix at least five dozen security holes in Windows and supported software, including patches for two zero-day vulnerabilities that are already being exploited. Also, Adobe, Google Chrome and Apple iOS users may have their own zero-day patching to do.
On Sept. 7, researchers at Citizen Lab warned they were seeing active exploitation of a “zero-click,” zero-day flaw to install spyware on iOS devices without any interaction from the victim.
“The exploit chain was capable of compromising iPhones running the latest version of iOS (16.6) without any interaction from the victim,” the researchers wrote.
According to Citizen Lab, the exploit uses malicious images sent via iMessage, an embedded component of Apple’s iOS that has been the source of previous zero-click flaws in iPhones and iPads.
Apple says the iOS flaw (CVE-2023-41064) does not seem to work against devices that have its ultra-paranoid “Lockdown Mode” enabled. This feature restricts non-essential iOS features to reduce the device’s overall attack surface, and it was designed for users concerned that they may be subject to targeted attacks. Citizen Lab says the bug it discovered was being exploited to install spyware made by the Israeli cyber surveillance company NSO Group.
This vulnerability is fixed in iOS 16.6.1 and iPadOS 16.6.1. To turn on Lockdown Mode in iOS 16, go to Settings, then Privacy and Security, then Lockdown Mode.
Not to be left out of the zero-day fun, Google acknowledged on Sept. 11 that an exploit for a heap overflow bug in Chrome is being exploited in the wild. Google says it is releasing updates to fix the flaw, and that restarting Chrome is the way to apply any pending updates. Interestingly, Google says this bug was reported by Apple and Citizen Lab.
On the Microsoft front, a zero-day in Microsoft Word is among the more concerning bugs fixed today. Tracked as CVE-2023-36761, it is flagged as an “information disclosure” vulnerability. But that description hardly grasps at the sensitivity of the information potentially exposed here.
Tom Bowyer, manager of product security at Automox, said exploiting this vulnerability could lead to the disclosure of Net-NTLMv2 hashes, which are used for authentication in Windows environments.
“If a malicious actor gains access to these hashes, they can potentially impersonate the user, gaining unauthorized access to sensitive data and systems,” Bowyer said, noting that CVE-2023-36761 can be exploited just by viewing a malicious document in the Windows preview pane. “They could also conduct pass-the-hash attacks, where the attacker uses the hashed version of a password to authenticate themselves without needing to decrypt it.”
The other Windows zero-day fixed this month is CVE-2023-36802. This is an “elevation of privilege” flaw in the “Microsoft Streaming Service Proxy,” which is built into Windows 10, 11 and Windows Server versions. Microsoft says an attacker who successfully exploits the bug can gain SYSTEM level privileges on a Windows computer.
Five of the flaws Microsoft fixed this month earned its “critical” rating, which the software giant reserves for vulnerabilities that can be exploited by malware or malcontents with little or no interaction by Windows users.
According to the SANS Internet Storm Center, the most serious critical bug in September’s Patch Tuesday is CVE-2023-38148, which is a weakness in the Internet Connection Sharing service on Windows. Microsoft says an unauthenticated attacker could leverage the flaw to install malware just sending a specially crafted data packet to a vulnerable Windows system.
Finally, Adobe has released critical security updates for its Adobe Reader and Acrobat software that also fixes a zero-day vulnerability (CVE-2023-26369). More details are at Adobe’s advisory.
For a more granular breakdown of the Windows updates pushed out today, check out Microsoft Patch Tuesday by Morphus Labs. In the meantime, consider backing up your data before updating Windows, and keep an eye on AskWoody.com for reports of any widespread problems with any of the updates released as part of September’s Patch Tuesday.
Update: Mozilla also has fixed zero-day flaw in Firefox and Thunderbird, and the Brave browser was updated as well. It appears the common theme here is any software that uses a code library called “libwebp,” and that this vulnerability is being tracked as CVE-2023-4863.
“This includes Electron-based applications, for example – Signal,” writes StackDiary.com. “Electron patched the vulnerability yesterday. Also, software like Honeyview (from Bandisoft) released an update to fix the issue. CVE-2023-4863 was falsely marked as Chrome-only by Mitre and other organizations that track CVE’s and 100% of media reported this issue as “Chrome only”, when it’s not.”
A new breach involving data from nine million AT&T customers is a fresh reminder that your mobile provider likely collects and shares a great deal of information about where you go and what you do with your mobile device — unless and until you affirmatively opt out of this data collection. Here’s a primer on why you might want to do that, and how.
Image: Shutterstock
Telecommunications giant AT&T disclosed this month that a breach at a marketing vendor exposed certain account information for nine million customers. AT&T said the data exposed did not include sensitive information, such as credit card or Social Security numbers, or account passwords, but was limited to “Customer Proprietary Network Information” (CPNI), such as the number of lines on an account.
Certain questions may be coming to mind right now, like “What the heck is CPNI?” And, ‘If it’s so ‘customer proprietary,’ why is AT&T sharing it with marketers?” Also maybe, “What can I do about it?” Read on for answers to all three questions.
AT&T’s disclosure said the information exposed included customer first name, wireless account number, wireless phone number and email address. In addition, a small percentage of customer records also exposed the rate plan name, past due amounts, monthly payment amounts and minutes used.
CPNI refers to customer-specific “metadata” about the account and account usage, and may include:
-Called phone numbers
-Time of calls
-Length of calls
-Cost and billing of calls
-Service features
-Premium services, such as directory call assistance
According to a succinct CPNI explainer at TechTarget, CPNI is private and protected information that cannot be used for advertising or marketing directly.
“An individual’s CPNI can be shared with other telecommunications providers for network operating reasons,” wrote TechTarget’s Gavin Wright. “So, when the individual first signs up for phone service, this information is automatically shared by the phone provider to partner companies.”
Is your mobile Internet usage covered by CPNI laws? That’s less clear, as the CPNI rules were established before mobile phones and wireless Internet access were common. TechTarget’s CPNI primer explains:
“Under current U.S. law, cellphone use is only protected as CPNI when it is being used as a telephone. During this time, the company is acting as a telecommunications provider requiring CPNI rules. Internet use, websites visited, search history or apps used are not protected CPNI because the company is acting as an information services provider not subject to these laws.”
Hence, the carriers can share and sell this data because they’re not explicitly prohibited from doing so. All three major carriers say they take steps to anonymize the customer data they share, but researchers have shown it is not terribly difficult to de-anonymize supposedly anonymous web-browsing data.
“Your phone, and consequently your mobile provider, know a lot about you,” wrote Jack Morse for Mashable. “The places you go, apps you use, and the websites you visit potentially reveal all kinds of private information — e.g. religious beliefs, health conditions, travel plans, income level, and specific tastes in pornography. This should bother you.”
Happily, all of the U.S. carriers are required to offer customers ways to opt out of having data about how they use their devices shared with marketers. Here’s a look at some of the carrier-specific practices and opt-out options.
AT&T’s policy says it shares device or “ad ID”, combined with demographics including age range, gender, and ZIP code information with third parties which explicitly include advertisers, programmers, and networks, social media networks, analytics firms, ad networks and other similar companies that are involved in creating and delivering advertisements.
AT&T said the data exposed on 9 million customers was several years old, and mostly related to device upgrade eligibility. This may sound like the data went to just one of its partners who experienced a breach, but in all likelihood it also went to hundreds of AT&T’s partners.
AT&T’s CPNI opt-out page says it shares CPNI data with several of its affiliates, including WarnerMedia, DirecTV and Cricket Wireless. Until recently, AT&T also shared CPNI data with Xandr, whose privacy policy in turn explains that it shares data with hundreds of other advertising firms. Microsoft bought Xandr from AT&T last year.
According to the Electronic Privacy Information Center (EPIC), T-Mobile seems to be the only company out of the big three to extend to all customers the rights conferred by the California Consumer Privacy Act (CCPA).
EPIC says T-Mobile customer data sold to third parties uses another unique identifier called mobile advertising IDs or “MAIDs.” T-Mobile claims that MAIDs don’t directly identify consumers, but under the CCPA MAIDs are considered “personal information” that can be connected to IP addresses, mobile apps installed or used with the device, any video or content viewing information, and device activity and attributes.
T-Mobile customers can opt out by logging into their account and navigating to the profile page, then to “Privacy and Notifications.” From there, toggle off the options for “Use my data for analytics and reporting” and “Use my data to make ads more relevant to me.”
Verizon’s privacy policy says it does not sell information that personally identities customers (e.g., name, telephone number or email address), but it does allow third-party advertising companies to collect information about activity on Verizon websites and in Verizon apps, through MAIDs, pixels, web beacons and social network plugins.
According to Wired.com’s tutorial, Verizon users can opt out by logging into their Verizon account through a web browser or the My Verizon mobile app. From there, select the Account tab, then click Account Settings and Privacy Settings on the web. For the mobile app, click the gear icon in the upper right corner and then Manage Privacy Settings.
On the privacy preferences page, web users can choose “Don’t use” under the Custom Experience section. On the My Verizon app, toggle any green sliders to the left.
EPIC notes that all three major carriers say resetting the consumer’s device ID and/or clearing cookies in the browser will similarly reset any opt-out preferences (i.e., the customer will need to opt out again), and that blocking cookies by default may also block the opt-out cookie from being set.
T-Mobile says its opt out is device-specific and/or browser-specific. “In most cases, your opt-out choice will apply only to the specific device or browser on which it was made. You may need to separately opt out from your other devices and browsers.”
Both AT&T and Verizon offer opt-in programs that gather and share far more information, including device location, the phone numbers you call, and which sites you visit using your mobile and/or home Internet connection. AT&T calls this their Enhanced Relevant Advertising Program; Verizon’s is called Custom Experience Plus.
In 2021, multiple media outlets reported that some Verizon customers were being automatically enrolled in Custom Experience Plus — even after those customers had already opted out of the same program under its previous name — “Verizon Selects.”
If none of the above opt out options work for you, at a minimum you should be able to opt out of CPNI sharing by calling your carrier, or by visiting one of their stores.
Why should you opt out of sharing CPNI data? For starters, some of the nation’s largest wireless carriers don’t have a great track record in terms of protecting the sensitive information that you give them solely for the purposes of becoming a customer — let alone the information they collect about your use of their services after that point.
In January 2023, T-Mobile disclosed that someone stole data on 37 million customer accounts, including customer name, billing address, email, phone number, date of birth, T-Mobile account number and plan details. In August 2021, T-Mobile acknowledged that hackers made off with the names, dates of birth, Social Security numbers and driver’s license/ID information on more than 40 million current, former or prospective customers who applied for credit with the company.
Last summer, a cybercriminal began selling the names, email addresses, phone numbers, SSNs and dates of birth on 23 million Americans. An exhaustive analysis of the data strongly suggested it all belonged to customers of one AT&T company or another. AT&T stopped short of saying the data wasn’t theirs, but said the records did not appear to have come from its systems and may be tied to a previous data incident at another company.
However frequently the carriers may alert consumers about CPNI breaches, it’s probably nowhere near often enough. Currently, the carriers are required to report a consumer CPNI breach only in cases “when a person, without authorization or exceeding authorization, has intentionally gained access to, used or disclosed CPNI.”
But that definition of breach was crafted eons ago, back when the primary way CPNI was exposed was through “pretexting,” such when the phone company’s employees are tricked into giving away protected customer data.
In January, regulators at the U.S. Federal Communications Commission (FCC) proposed amending the definition of “breach” to include things like inadvertent disclosure — such as when companies expose CPNI data on a poorly-secured server in the cloud. The FCC is accepting public comments on the matter until March 24, 2023.
While it’s true that the leak of CPNI data does not involve sensitive information like Social Security or credit card numbers, one thing AT&T’s breach notice doesn’t mention is that CPNI data — such as balances and payments made — can be abused by fraudsters to make scam emails and text messages more believable when they’re trying to impersonate AT&T and phish AT&T customers.
The other problem with letting companies share or sell your CPNI data is that the wireless carriers can change their privacy policies at any time, and you are assumed to be okay with those changes as long as you keep using their services.
For example, location data from your wireless device is most definitely CPNI, and yet until very recently all of the major carriers sold their customers’ real-time location data to third party data brokers without customer consent.
What was their punishment? In 2020, the FCC proposed fines totaling $208 million against all of the major carriers for selling their customers’ real-time location data. If that sounds like a lot of money, consider that all of the major wireless providers reported tens of billions of dollars in revenue last year (e.g., Verizon’s consumer revenue alone was more than $100 billion last year).
If the United States had federal privacy laws that were at all consumer-friendly and relevant to today’s digital economy, this kind of data collection and sharing would always be opt-in by default. In such a world, the enormously profitable wireless industry would likely be forced to offer clear financial incentives to customers who choose to share this information.
But until that day arrives, understand that the carriers can change their data collection and sharing policies when it suits them. And regardless of whether you actually read any notices about changes to their privacy policies, you will have agreed to those changes as long as you continue using their service.
Related tags
It’s fun to jump on our favorite social media sites such as Facebook, Instagram, or LinkedIn and know we can quickly check in with friends and family, discover interesting content, and instantly connect with colleagues worldwide. The last thing on most of our minds when tapping our way into these familiar online communities is being the target of cybercrime.
But it’s happening more and more.
Last month, The Federal Trade Commission (FTC) described popular social media sites as “goldmines” for malicious attacks. The FTC revealed that more than one in four people who reported losing money to fraud in 2021 said it started on social media with an ad, a post, or a message. More than 95,000 people reported about $770 million in losses to fraud initiated on social media platforms in 2021. According to the FTC, those losses account for about 25 percent of all reported losses to fraud in 2021 and represent a stunning eighteenfold increase over 2017 reported losses.
The social environment is a magnet for bad actors because people of every age and country flock there each day. The constant flow of conversation and content—and more importantly, the climate of trust—makes social networks juicy targets for cybercrime.
The biggest motivation? The emerging digital security threat of cryptojacking (aka illegal cryptomining). Cryptojacking is illegally accessing another person’s computer power to mine cryptocurrency. Cybercriminals do this by getting a victim to click on a malicious link delivered via direct message, a news story, or an ad. Once clicked, that link loads crypto mining code on the victim’s computer or leads them to an infected website or online ad with JavaScript code that auto-executes once it’s loaded in the victim’s browser. Often the malware goes undetected, and the only way a victim might know their system has been compromised is that it may start performing more slowly.
While bad actors use social media platforms to distribute cryptomining malware, they also spread other malware types such as advertisements, faulty plug-ins, and apps that draw users in by offering “too good to be true” deals. Once clicked on, the malware allows cybercriminals to access data, create keyloggers, release ransomware, and monitor social media accounts for future scamming opportunities.
Be sure your kids understand the risks and responsibilities associated with device ownership. Consider putting time aside each week to discuss crucial digital literacy topics and ongoing threats such as cryptomining malware. Consider a “device check-in” that requires each person in your family to “check off” the following security guidelines.
To help protect your family devices from viruses, malware, spyware, and other digital threats entering social media sites, consider adding extra security to your family devices with McAfee Total Protection.
Avoid posting home addresses, full birth dates, employer information, school information, as well as exact location details of where you are.
Install software updates so that attackers cannot take advantage of the latest security loopholes.
Select passwords that will be difficult for bad actors to guess and use different passwords for different programs and devices.
For a virus to solve cryptographic calculations required to mine cryptocurrency requires an enormous amount of computer processing power (CPUs). Cryptojacking secretly consumes a victim’s processing power, battery life, and computer or device memory. Look out for a decline in device processing speed.
Be careful when accepting friend requests, direct messages, or clicking on links sent by someone you don’t know personally. This is one of the most popular ways cybercriminals gain access.
Be discerning even when a known friend sends you a second friend request claiming they’ve been hacked. Search known names on the platform for multiple accounts. Cybercriminals have been known to gather personal details of individuals, pose as that person, then connect with friend lists using familiar information to build trust with more potential victims.
Be sure to report any fraudulent activity you encounter on social platforms to help stop the threat from spreading to other accounts, including friends and family who may be connected back to you.
New scams and more sophisticated ways to steal data—and computer processing power for illegal cryptomining—surface daily. Staying in front of those threats and folding them into your family dynamic is one of the most powerful ways to give your kids the skills and security habits they will need to thrive in today’s digital world.
The post Social Media: How to Steer Your Family Clear of Cryptomining Malware appeared first on McAfee Blog.
Trend Micro Research has developed a go-to resource for all things related to cybercriminal underground hosting and infrastructure. Today we released the second in this three-part series of reports which detail the what, how, and why of cybercriminal hosting (see the first part here).
As part of this report, we dive into the common life cycle of a compromised server from initial compromise to the different stages of monetization preferred by criminals. It’s also important to note that regardless of whether a company’s server is on-premise or cloud-based, criminals don’t care what kind of server they compromise.
To a criminal, any server that is exposed or vulnerable is fair game.
Cloud vs. On-Premise Servers
Cybercriminals don’t care where servers are located. They can leverage the storage space, computation resources, or steal data no matter what type of server they access. Whatever is most exposed will most likely be abused.
As digital transformation continues and potentially picks up to allow for continued remote working, cloud servers are more likely to be exposed. Many enterprise IT teams, unfortunately, are not arranged to provide the same protection for cloud as on-premise servers.
As a side note, we want to emphasize that this scenario applies only to cloud instances replicating the storage or processing power of an on-premise server. Containers or serverless functions won’t fall victim to this same type of compromise. Additionally, if the attacker compromises the cloud account, as opposed to a single running instance, then there is an entirely different attack life cycle as they can spin up computing resources at will. Although this is possible, however, it is not our focus here.
Attack Red Flags
Many IT and security teams might not look for earlier stages of abuse. Before getting hit by ransomware, however, there are other red flags that could alert teams to the breach.
If a server is compromised and used for cryptocurrency mining (also known as cryptomining), this can be one of the biggest red flags for a security team. The discovery of cryptomining malware running on any server should result in the company taking immediate action and initiating an incident response to lock down that server.
This indicator of compromise (IOC) is significant because while cryptomining malware is often seen as less serious compared to other malware types, it is also used as a monetization tactic that can run in the background while server access is being sold for further malicious activity. For example, access could be sold for use as a server for underground hosting. Meanwhile, the data could be exfiltrated and sold as personally identifiable information (PII) or for industrial espionage, or it could be sold for a targeted ransomware attack. It’s possible to think of the presence of cryptomining malware as the proverbial canary in a coal mine: This is the case, at least, for several access-as-a-service (AaaS) criminals who use this as part of their business model.
Attack Life Cycle
Attacks on compromised servers follow a common path:
|
|
The monetization lifecycle of a compromised server
Often, targeted ransomware is the final stage. In most cases, asset categorization reveals data that is valuable to the business but not necessarily valuable for espionage.
A deep understanding of the servers and network allows criminals behind a targeted ransomware attack to hit the company where it hurts the most. These criminals would know the dataset, where they live, whether there are backups of the data, and more. With such a detailed blueprint of the organization in their hands, cybercriminals can lock down critical systems and demand higher ransom, as we saw in our 2020 midyear security roundup report.
In addition, while a ransomware attack would be the visible urgent issue for the defender to solve in such an incident, the same attack could also indicate that something far more serious has likely already taken place: the theft of company data, which should be factored into the company’s response planning. More importantly, it should be noted that once a company finds an IOC for cryptocurrency, stopping the attacker right then and there could save them considerable time and money in the future.
Ultimately, no matter where a company’s data is stored, hybrid cloud security is critical to preventing this life cycle.
The post The Life Cycle of a Compromised (Cloud) Server appeared first on .
“We’re here to serve” is Benny Yazdanpanahi’s motto as CIO for City of Tyler located in Texas. Supporting a population of approximately 107,000, Yazdanpanahi’s vision for his city relies on the use of data to deliver exceptional services to citizens, today and into the future.
Since joining the city nearly 19 years ago, Yazdanpanahi has continually challenged himself and his small IT team to stay agile and to keep the needs of the city’s citizens at the forefront. Today, Yazdanpanahi and his team use IT systems to make more informed decisions, enhance community services, and improve public safety.
“Our citizens, and especially the younger generation, want immediate access to information and online services,” said Yazdanpanahi. “We want to keep pace with the latest technologies, not only for citizens but also to make our city employees more effective and efficient.”
But Yazdanpanahi knows that a highly secure IT environment is essential to their continued success. “Many US cities have been hacked, so security is on top of everyone’s mind. As a city, we want to provide great services, but we have to provide them in a highly secure manner.”
To accomplish those security goals with limited resources and staff, Tyler’s leaders have been collaborating with Trend Micro for several years. The cybersecurity giant has brought a hands-on approach and an ability to stay ahead of the threats. Their adaptability to the threat landscape strengthens the city’s security posture and empowers the IT team to focus on serving the community.
The city has been able to stay secure without additional staff and resources. City employees don’t spend time resolving IT issues and improve their productivity to focus on things that mater for the city.
“If you don’t collaborate with a partner that’s highly experienced in the security field, you can easily get blindsided,” said Yazdanpanahi. “We need someone there, day in and out, focused on security. Trend Micro knows how to protect cities like us. They provide the kind of north, south, east, and west protection that makes my job easier and allows us to use our data to accomplish new, exciting things for our city.”
Read more about Benny’s journey to securing the city:
https://www.trendmicro.com/en_ca/about/customer-stories/city-of-tyler.html
The post Connected Security Solutions Helps City of Tyler’s CIO to Reduce Costs While Enabling Delivery of Enhanced Community & Public Safety Services appeared first on .
FreshRSS