Login
Roughly nine years ago, KrebsOnSecurity profiled a Pakistan-based cybercrime group called “The Manipulaters,” a sprawling web hosting network of phishing and spam delivery platforms. In January 2024, The Manipulaters pleaded with this author to unpublish previous stories about their work, claiming the group had turned over a new leaf and gone legitimate. But new research suggests that while they have improved the quality of their products and services, these nitwits still fail spectacularly at hiding their illegal activities.
In May 2015, KrebsOnSecurity published a brief writeup about the brazen Manipulaters team, noting that they openly operated hundreds of web sites selling tools designed to trick people into giving up usernames and passwords, or deploying malicious software on their PCs.
Manipulaters advertisement for “Office 365 Private Page with Antibot” phishing kit sold on the domain heartsender,com. “Antibot” refers to functionality that attempts to evade automated detection techniques, keeping a phish deployed as long as possible. Image: DomainTools.
The core brand of The Manipulaters has long been a shared cybercriminal identity named “Saim Raza,” who for the past decade has peddled a popular spamming and phishing service variously called “Fudtools,” “Fudpage,” “Fudsender,” “FudCo,” etc. The term “FUD” in those names stands for “Fully Un-Detectable,” and it refers to cybercrime resources that will evade detection by security tools like antivirus software or anti-spam appliances.
A September 2021 story here checked in on The Manipulaters, and found that Saim Raza and company were prospering under their FudCo brands, which they secretly managed from a front company called We Code Solutions.
That piece worked backwards from all of the known Saim Raza email addresses to identify Facebook profiles for multiple We Code Solutions employees, many of whom could be seen celebrating company anniversaries gathered around a giant cake with the words “FudCo” painted in icing.
Since that story ran, KrebsOnSecurity has heard from this Saim Raza identity on two occasions. The first was in the weeks following the Sept. 2021 piece, when one of Saim Raza’s known email addresses — bluebtcus@gmail.com — pleaded to have the story taken down.
“Hello, we already leave that fud etc before year,” the Saim Raza identity wrote. “Why you post us? Why you destroy our lifes? We never harm anyone. Please remove it.”
Not wishing to be manipulated by a phishing gang, KrebsOnSecurity ignored those entreaties. But on Jan. 14, 2024, KrebsOnSecurity heard from the same bluebtcus@gmail.com address, apropos of nothing.
“Please remove this article,” Sam Raza wrote, linking to the 2021 profile. “Please already my police register case on me. I already leave everything.”
Asked to elaborate on the police investigation, Saim Raza said they were freshly released from jail.
“I was there many days,” the reply explained. “Now back after bail. Now I want to start my new work.”
Exactly what that “new work” might entail, Saim Raza wouldn’t say. But a new report from researchers at DomainTools.com finds that several computers associated with The Manipulaters have been massively hacked by malicious data- and password-snarfing malware for quite some time.
DomainTools says the malware infections on Manipulaters PCs exposed “vast swaths of account-related data along with an outline of the group’s membership, operations, and position in the broader underground economy.”
“Curiously, the large subset of identified Manipulaters customers appear to be compromised by the same stealer malware,” DomainTools wrote. “All observed customer malware infections began after the initial compromise of Manipulaters PCs, which raises a number of questions regarding the origin of those infections.”
A number of questions, indeed. The core Manipulaters product these days is a spam delivery service called HeartSender, whose homepage openly advertises phishing kits targeting users of various Internet companies, including Microsoft 365, Yahoo, AOL, Intuit, iCloud and ID.me, to name a few.
A screenshot of the homepage of HeartSender 4 displays an IP address tied to fudtoolshop@gmail.com. Image: DomainTools.
HeartSender customers can interact with the subscription service via the website, but the product appears to be far more effective and user-friendly if one downloads HeartSender as a Windows executable program. Whether that HeartSender program was somehow compromised and used to infect the service’s customers is unknown.
However, DomainTools also found the hosted version of HeartSender service leaks an extraordinary amount of user information that probably is not intended to be publicly accessible. Apparently, the HeartSender web interface has several webpages that are accessible to unauthenticated users, exposing customer credentials along with support requests to HeartSender developers.
“Ironically, the Manipulaters may create more short-term risk to their own customers than law enforcement,” DomainTools wrote. “The data table “User Feedbacks” (sic) exposes what appear to be customer authentication tokens, user identifiers, and even a customer support request that exposes root-level SMTP credentials–all visible by an unauthenticated user on a Manipulaters-controlled domain. Given the risk for abuse, this domain will not be published.”
This is hardly the first time The Manipulaters have shot themselves in the foot. In 2019, The Manipulaters failed to renew their core domain name — manipulaters[.]com — the same one tied to so many of the company’s past and current business operations. That domain was quickly scooped up by Scylla Intel, a cyber intelligence firm that focuses on connecting cybercriminals to their real-life identities.
Currently, The Manipulaters seem focused on building out and supporting HeartSender, which specializes in spam and email-to-SMS spamming services.
“The Manipulaters’ newfound interest in email-to-SMS spam could be in response to the massive increase in smishing activity impersonating the USPS,” DomainTools wrote. “Proofs posted on HeartSender’s Telegram channel contain numerous references to postal service impersonation, including proving delivery of USPS-themed phishing lures and the sale of a USPS phishing kit.”
Reached via email, the Saim Raza identity declined to respond to questions about the DomainTools findings.
“First [of] all we never work on virus or compromised computer etc,” Raza replied. “If you want to write like that fake go ahead. Second I leave country already. If someone bind anything with exe file and spread on internet its not my fault.”
Asked why they left Pakistan, Saim Raza said the authorities there just wanted to shake them down.
“After your article our police put FIR on my [identity],” Saim Raza explained. “FIR” in this case stands for “First Information Report,” which is the initial complaint in the criminal justice system of Pakistan.
“They only get money from me nothing else,” Saim Raza continued. “Now some officers ask for money again again. Brother, there is no good law in Pakistan just they need money.”
Saim Raza has a history of being slippery with the truth, so who knows whether The Manipulaters and/or its leaders have in fact fled Pakistan (it may be more of an extended vacation abroad). With any luck, these guys will soon venture into a more Western-friendly, “good law” nation and receive a warm welcome by the local authorities.
There has been an exponential increase in breaches within enterprises despite the carefully constructed and controlled perimeters that exist around applications and data. Once an attacker can access… Read more on Cisco Blogs
Related tags
Malicious hackers are targeting people in the cryptocurrency space in attacks that start with a link added to the target’s calendar at Calendly, a popular application for scheduling appointments and meetings. The attackers impersonate established cryptocurrency investors and ask to schedule a video conference call. But clicking the meeting link provided by the scammers prompts the user to run a script that quietly installs malware on macOS systems.
KrebsOnSecurity recently heard from a reader who works at a startup that is seeking investment for building a new blockchain platform for the Web. The reader spoke on condition that their name not be used in this story, so for the sake of simplicity we’ll call him Doug.
Being in the cryptocurrency scene, Doug is also active on the instant messenger platform Telegram. Earlier this month, Doug was approached by someone on Telegram whose profile name, image and description said they were Ian Lee, from Signum Capital, a well-established investment firm based in Singapore. The profile also linked to Mr. Lee’s Twitter/X account, which features the same profile image.
The investor expressed interest in financially supporting Doug’s startup, and asked if Doug could find time for a video call to discuss investment prospects. Sure, Doug said, here’s my Calendly profile, book a time and we’ll do it then.
When the day and time of the scheduled meeting with Mr. Lee arrived, Doug clicked the meeting link in his calendar but nothing happened. Doug then messaged the Mr. Lee account on Telegram, who said there was some kind of technology issue with the video platform, and that their IT people suggested using a different meeting link.
Doug clicked the new link, but instead of opening up a videoconference app, a message appeared on his Mac saying the video service was experiencing technical difficulties.
“Some of our users are facing issues with our service,” the message read. “We are actively working on fixing these problems. Please refer to this script as a temporary solution.”
Doug said he ran the script, but nothing appeared to happen after that, and the videoconference application still wouldn’t start. Mr. Lee apologized for the inconvenience and said they would have to reschedule their meeting, but he never responded to any of Doug’s follow-up messages.
It didn’t dawn on Doug until days later that the missed meeting with Mr. Lee might have been a malware attack. Going back to his Telegram client to revisit the conversation, Doug discovered his potential investor had deleted the meeting link and other bits of conversation from their shared chat history.
In a post to its Twitter/X account last month, Signum Capital warned that a fake profile pretending to be their employee Mr. Lee was trying to scam people on Telegram.
The file that Doug ran is a simple Apple Script (file extension “.scpt”) that downloads and executes a malicious trojan made to run on macOS systems. Unfortunately for us, Doug freaked out after deciding he’d been tricked — backing up his important documents, changing his passwords, and then reinstalling macOS on his computer. While this a perfectly sane response, it means we don’t have the actual malware that was pushed to his Mac by the script.
But Doug does still have a copy of the malicious script that was downloaded from clicking the meeting link (the online host serving that link is now offline). A search in Google for a string of text from that script turns up a December 2023 blog post from cryptocurrency security firm SlowMist about phishing attacks on Telegram from North Korean state-sponsored hackers.
“When the project team clicks the link, they encounter a region access restriction,” SlowMist wrote. “At this point, the North Korean hackers coax the team into downloading and running a ‘location-modifying’ malicious script. Once the project team complies, their computer comes under the control of the hackers, leading to the theft of funds.”
Image: SlowMist.
SlowMist says the North Korean phishing scams used the “Add Custom Link” feature of the Calendly meeting scheduling system on event pages to insert malicious links and initiate phishing attacks.
“Since Calendly integrates well with the daily work routines of most project teams, these malicious links do not easily raise suspicion,” the blog post explains. “Consequently, the project teams may inadvertently click on these malicious links, download, and execute malicious code.”
SlowMist said the malware downloaded by the malicious link in their case comes from a North Korean hacking group dubbed “BlueNoroff, which Kaspersky Labs says is a subgroup of the Lazarus hacking group.
“A financially motivated threat actor closely connected with Lazarus that targets banks, casinos, fin-tech companies, POST software and cryptocurrency businesses, and ATMs,” Kaspersky wrote of BlueNoroff in Dec. 2023.
The North Korean regime is known to use stolen cryptocurrencies to fund its military and other state projects. A recent report from Recorded Future finds the Lazarus Group has stolen approximately $3 billion in cryptocurrency over the past six years.
While there is still far more malware out there today targeting Microsoft Windows PCs, the prevalence of information-stealing trojans aimed at macOS users is growing at a steady clip. MacOS computers include X-Protect, Apple’s built-in antivirus technology. But experts say attackers are constantly changing the appearance and behavior of their malware to evade X-Protect.
“Recent updates to macOS’s XProtect signature database indicate that Apple are aware of the problem, but early 2024 has already seen a number of stealer families evade known signatures,” security firm SentinelOne wrote in January.
According to Chris Ueland from the threat hunting platform Hunt.io, the Internet address of the fake meeting website Doug was tricked into visiting (104.168.163,149) hosts or very recently hosted about 75 different domain names, many of which invoke words associated with videoconferencing or cryptocurrency. Those domains indicate this North Korean hacking group is hiding behind a number of phony crypto firms, like the six-month-old website for Cryptowave Capital (cryptowave[.]capital).
In a statement shared with KrebsOnSecurity, Calendly said it was aware of these types of social engineering attacks by cryptocurrency hackers.
“To help prevent these kinds of attacks, our security team and partners have implemented a service to automatically detect fraud and impersonations that could lead to social engineering,” the company said. “We are also actively scanning content for all our customers to catch these types of malicious links and to prevent hackers earlier on. Additionally, we intend to add an interstitial page warning users before they’re redirected away from Calendly to other websites. Along with the steps we’ve taken, we recommend users stay vigilant by keeping their software secure with running the latest updates and verifying suspicious links through tools like VirusTotal to alert them of possible malware. We are continuously strengthening the cybersecurity of our platform to protect our customers.”
The increasing frequency of new Mac malware is a good reminder that Mac users should not depend on security software and tools to flag malicious files, which are frequently bundled with or disguised as legitimate software.
As KrebsOnSecurity has advised Windows users for years, a good rule of safety to live by is this: If you didn’t go looking for it, don’t install it. Following this mantra heads off a great deal of malware attacks, regardless of the platform used. When you do decide to install a piece of software, make sure you are downloading it from the original source, and then keep it updated with any new security fixes.
On that last front, I’ve found it’s a good idea not to wait until the last minute to configure my system before joining a scheduled videoconference call. Even if the call uses software that is already on my computer, it is often the case that software updates are required before the program can be used, and I’m one of those weird people who likes to review any changes to the software maker’s privacy policies or user agreements before choosing to install updates.
Most of all, verify new contacts from strangers before accepting anything from them. In this case, had Doug simply messaged Mr. Lee’s real account on Twitter/X or contacted Signum Capital directly, he would discovered that the real Mr. Lee never asked for a meeting.
If you’re approached in a similar scheme, the response from the would-be victim documented in the SlowMist blog post is probably the best.
Image: SlowMist.
Update: Added comment from Calendly.
FreshRSS