In December 2023, KrebsOnSecurity revealed the real-life identity of Rescator, the nickname used by a Russian cybercriminal who sold more than 100 million payment cards stolen from Target and Home Depot between 2013 and 2014. Moscow resident Mikhail Shefel, who confirmed using the Rescator identity in a recent interview, also admitted reaching out because he is broke and seeking publicity for several new money making schemes.

Mikhail “Mike” Shefel’s former Facebook profile. Shefel has since legally changed his last name to Lenin.

Mr. Shefel, who recently changed his legal surname to Lenin, was the star of last year’s story, Ten Years Later, New Clues in the Target Breach. That investigation detailed how the 38-year-old Shefel adopted the nickname Rescator while working as vice president of payments at ChronoPay, a Russian financial company that paid spammers to advertise fake antivirus scams, male enhancement drugs and knockoff pharmaceuticals.

Mr. Shefel did not respond to requests for comment in advance of that December 2023 profile. Nor did he respond to reporting here in January 2024 that he ran an IT company with a 34-year-old Russian man named Aleksandr Ermakov, who was sanctioned by authorities in Australia, the U.K. and U.S. for stealing data on nearly 10 million customers of the Australian health insurance giant Medibank.

But not long after KrebsOnSecurity reported in April that Shefel/Rescator also was behind the theft of Social Security and tax information from a majority of South Carolina residents in 2012, Mr. Shefel began contacting this author with the pretense of setting the record straight on his alleged criminal hacking activities.

In a series of live video chats and text messages, Mr. Shefel confirmed he indeed went by the Rescator identity for several years, and that he did operate a slew of websites between 2013 and 2015 that sold payment card data stolen from Target, Home Depot and a number of other nationwide retail chains.

Shefel claims the true mastermind behind the Target and other retail breaches was Dmitri Golubov, an infamous Ukrainian hacker known as the co-founder of Carderplanet, among the earliest Russian-language cybercrime forums focused on payment card fraud. Mr. Golubov could not be reached for comment, and Shefel says he no longer has the laptop containing evidence to support that claim.

Shefel asserts he and his team were responsible for developing the card-stealing malware that Golubov’s hackers installed on Target and Home Depot payment terminals, and that at the time he was technical director of a long-running Russian cybercrime community called Lampeduza.

“My nickname was MikeMike, and I worked with Dmitri Golubov and made technologies for him,” Shefel said. “I’m also godfather of his second son.”

Dmitri Golubov, circa 2005. Image: U.S. Postal Investigative Service.

A week after breaking the story about the 2013 data breach at Target, KrebsOnSecurity published Who’s Selling Cards from Target?, which identified a Ukrainian man who went by the nickname Helkern as Rescator’s original identity. But Shefel claims Helkern was subordinate to Golubov, and that he was responsible for introducing the two men more than a decade ago.

“Helkern was my friend, I [set up a] meeting with Golubov and him in 2013,” Shefel said. “That was in Odessa, Ukraine. I was often in that city, and [it’s where] I met my second wife.”

Shefel claims he made several hundred thousand dollars selling cards stolen by Golubov’s Ukraine-based hacking crew, but that not long after Russia annexed Crimea in 2014 Golubov cut him out of the business and replaced Shefel’s malware coding team with programmers in Ukraine.

Golubov was arrested in Ukraine in 2005 as part of a joint investigation with multiple U.S. federal law enforcement agencies, but his political connections in the country ensured his case went nowhere. Golubov later earned immunity from prosecution by becoming an elected politician and founding the Internet Party of Ukraine, which called for free internet for all, the creation of country-wide “hacker schools” and the “computerization of the entire economy.”

Mr. Shefel says he stopped selling stolen payment cards after being pushed out of the business, and invested his earnings in a now-defunct Russian search engine called tf[.]org. He also apparently ran a business called click2dad[.]net that paid people to click on ads for Russian government employment opportunities.

When those enterprises fizzled out, Shefel reverted to selling malware coding services for hire under the nickname “Getsend“; this claim checks out, as Getsend for many years advertised the same Telegram handle that Shefel used in our recent chats and video calls.

Shefel acknowledged that his outreach was motivated by a desire to publicize several new business ventures. None of those will be mentioned here because Shefel is already using my December 2023 profile of him to advertise what appears to be a pyramid scheme, and to remind others within the Russian hacker community of his skills and accomplishments.

Shefel says he is now flat broke, and that he currently has little to show for a storied hacking career. The Moscow native said he recently heard from his ex-wife, who had read last year’s story about him and was suddenly wondering where he’d hidden all of his earnings.

More urgently, Shefel needs money to stay out of prison. In February, he and Ermakov were arrested on charges of operating a short-lived ransomware affiliate program in 2021 called Sugar (a.k.a. Sugar Locker), which targeted single computers and end-users instead of corporations. Shefel is due to face those charges in a Moscow court on Friday, Nov. 15, 2024. Ermakov was recently found guilty and given two years probation.

Shefel claims his Sugar ransomware affiliate program was a bust, and never generated any profits. Russia is known for not prosecuting criminal hackers within its borders who scrupulously avoid attacking Russian businesses and consumers. When asked why he now faces prosecution over Sugar, Shefel said he’s certain the investigation was instigated by  Pyotr “Peter” Vrublevsky — the son of his former boss at ChronoPay.

ChronoPay founder and CEO Pavel Vrublevsky was the key subject of my 2014 book Spam Nation, which described his role as head of one of Russia’s most notorious criminal spam operations.

Vrublevsky Sr. recently declared bankruptcy, and is currently in prison on fraud charges. Russian authorities allege Vrublevsky operated several fraudulent SMS-based payment schemes. They also accused Vrublevsky of facilitating money laundering for Hydra, the largest Russian darknet market at the time. Hydra trafficked in illegal drugs and financial services, including cryptocurrency tumbling for money laundering, exchange services between cryptocurrency and Russian rubles, and the sale of falsified documents and hacking services.

However, in 2022 KrebsOnSecurity reported on a more likely reason for Vrublevsky’s latest criminal charges: He’d been extensively documenting the nicknames, real names and criminal exploits of Russian hackers who worked with the protection of corrupt officials in the Russian Federal Security Service (FSB), and operating a Telegram channel that threatened to expose alleged nefarious dealings by Russian financial executives.

Shefel believes Vrublevsky’s son Peter paid corrupt cops to levy criminal charges against him after reporting the youth to Moscow police, allegedly for walking around in public with a loaded firearm. Shefel says the Russian authorities told the younger Vrublevsky that he had lodged the firearms complaint.

In July 2024, the Russian news outlet Izvestia published a lengthy investigation into Peter Vrublevsky, alleging that the younger son took up his father’s mantle and was responsible for advertising Sprut, a Russian-language narcotics bazaar that sprang to life after the Hydra darknet market was shut down by international law enforcement agencies in 2022.

Izvestia reports that Peter Vrublevsky was the advertising mastermind behind this 3D ad campaign and others promoting the Russian online narcotics bazaar Sprut.

Izvestia reports that Peter Vrublevsky is currently living in Switzerland, where he reportedly fled in 2022 after being “arrested in absentia” in Russia on charges of running a violent group that could be hired via Telegram to conduct a range of physical attacks in real life, including firebombings and muggings.

Shefel claims his former partner Golubov was involved in the development and dissemination of early ransomware strains, including Cryptolocker, and that Golubov remains active in the cybercrime community.

Meanwhile, Mr. Shefel portrays himself as someone who is barely scraping by with the few odd coding jobs that come his way each month. Incredibly, the day after our initial interview via Telegram, Shefel proposed going into business together.

By way of example, he suggested maybe a company centered around recovering lost passwords for cryptocurrency accounts, or perhaps a series of online retail stores that sold cheap Chinese goods at a steep markup in the United States.

“Hi, how are you?” he inquired. “Maybe we can open business?”

The U.S. Federal Bureau of Investigation (FBI) says it has disrupted a giant botnet built and operated by a Russian government intelligence unit known for launching destructive cyberattacks against energy infrastructure in the United States and Ukraine. Separately, law enforcement agencies in the U.S. and Germany moved to decapitate “Hydra,” a billion-dollar Russian darknet drug bazaar that also helped to launder the profits of multiple Russian ransomware groups.

FBI officials said Wednesday they disrupted “Cyclops Blink,” a collection of compromised networking devices managed by hackers working with the Russian Federation’s Main Intelligence Directorate (GRU).

A statement from the U.S. Department of Justice (DOJ) says the GRU’s hackers built Cyclops Blink by exploiting previously undocumented security weaknesses in firewalls and routers made by both ASUS and WatchGuard Technologies. The DOJ said it did not seek to disinfect compromised devices; instead, it obtained court orders to remove the Cyclops Blink malware from its “command and control” servers — the hidden machines that allowed the attackers to orchestrate the activities of the botnet.

The FBI and other agencies warned in March that the Cyclops Blink malware was built to replace a threat called “VPNFilter,” an earlier malware platform that targeted vulnerabilities in a number of consumer-grade wireless and wired routers. In May 2018, the FBI executed a similar strategy to dismantle VPNFilter, which had spread to more than a half-million consumer devices.

On April 1, ASUS released updates to fix the security vulnerability in a range of its Wi-Fi routers. Meanwhile, WatchGuard appears to have silently fixed its vulnerability in an update shipped almost a year ago, according to Dan Goodin at Ars Technica.

SANDWORM AND TRITON

Security experts say both VPNFilter and Cyclops Blink are the work of a hacking group known as Sandworm or Voodoo Bear, the same Russian team blamed for disrupting Ukraine’s electricity in 2015.

Sandworm also has been implicated in the “Industroyer” malware attacks on Ukraine’s power grid in December 2016, as well as the 2016 global malware contagion “NotPetya,” which crippled companies worldwide using an exploit believed to have been developed by and then stolen from the U.S. National Security Agency (NSA).

The action against Cyclops Blink came just weeks after the Justice Department unsealed indictments against four Russian men accused of launching cyberattacks on power utilities in the United States and abroad.

One of the indictments named three officers of Russia’s Federal Security Service (FSB) suspected of being members of Berserk Bear, a.k.a. Dragonfly 2.0, a.k.a. Havex, which has been blamed for targeting electrical utilities and other critical infrastructure worldwide and is widely believed to be working at the behest of the Russian government.

The other indictment named Russians affiliated with a skilled hacking group known as “Triton” or “Trisis,” which infected a Saudi oil refinery with destructive malware in 2017, and then attempted to do the same to U.S. energy facilities.

The Justice Department said that in Dragonfly’s first stage between 2012 and 2014, the defendants hacked into computer networks of industrial control systems (ICS) companies and software providers, and then hid malware inside legitimate software updates for such systems.

“After unsuspecting customers downloaded Havex-infected updates, the conspirators would use the malware to, among other things, create backdoors into infected systems and scan victims’ networks for additional ICS/SCADA devices,” the DOJ said. “Through these and other efforts, including spearphishing and “watering hole” attacks, the conspirators installed malware on more than 17,000 unique devices in the United States and abroad, including ICS/SCADA controllers used by power and energy companies.”

In Dragonfly’s second iteration between 2014 and 2017, the hacking group spear-phished more than 3,300 people at more than 500 U.S. and international companies and entities, including U.S. federal agencies like the Nuclear Regulatory Commission.

“In some cases, the spearphishing attacks were successful, including in the compromise of the business network (i.e., involving computers not directly connected to ICS/SCADA equipment) of the Wolf Creek Nuclear Operating Corporation (Wolf Creek) in Burlington, Kansas, which operates a nuclear power plant,” the DOJ’s account continues. “Moreover, after establishing an illegal foothold in a particular network, the conspirators typically used that foothold to penetrate further into the network by obtaining access to other computers and networks at the victim entity.”

HYDRA

Federation Tower, Moscow. Image: Evgeniy Vasilev.

Also this week, German authorities seized the server infrastructure for the Hydra Market, a bustling underground market for illegal narcotics, stolen data and money laundering that’s been operating since 2015. The German Federal Criminal Police Office (BKA) said Hydra had roughly 17 million customers, and over 19,000 vendors, with sales amounting to at least 1.23 billion euros in 2020 alone.

In a statement on the Hydra takedown, the U.S. Department of Treasury said blockchain researchers had determined that approximately 86 percent of the illicit Bitcoin received directly by Russian virtual currency exchanges in 2019 came from Hydra.

Treasury sanctioned a number of cryptocurrency wallets associated with Hydra and with a virtual currency exchange called “Garantex,” which the agency says processed more than $100 million in transactions associated with illicit actors and darknet markets. That amount included roughly $8 million in ransomware proceeds laundered through Hydra on behalf of multiple ransomware groups, including Ryuk and Conti.

“Today’s action against Hydra and Garantex builds upon recent sanctions against virtual currency exchanges SUEX and CHATEX, both of which, like Garantex, operated out of Federation Tower in Moscow, Russia,” the Treasury Department said.