Blockchain & Cryptocurrency
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Cryptocurrency Fraud
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Fraud Management & Cybercrime
Blender and Sinbad Were Favorites of Ransomware and North Korean Hackers
Three Russian nationals behind cryptocurrency mixers favored by ransomware hackers and North Korean crypto thieves face criminal charges in U.S. federal court.
Federal prosecutors allege the three men were the masterminds behind the Blender and Sinbad mixers – with Sinbad commonly believed to be the successor to Blender.
The FBI seized Sinbad in November 2023, while the Department of Treasury called it the “preferred mixing service” for North Korean state hackers known as Lazarus Group. Millions of dollars worth of stolen cryptocurrency passed through Sinbad, the federal government said, including large chunks of the $600 million stolen by Pyongyang from Axie Infinity in March 2022 and the $100 million it filched from Horizon Bridge in June 2022 (see: US Sanctions, Seizes Sinbad Cryptomixer).
The three men are Roman Vitalyevich Ostapenko, 55, Alexander Evgenievich Oleynik, 44, and Anton Vyachlavovich Tarasov, 32. Prosecutors said police arrested Ostapenko and Oleynik on Dec. 1, 2024, while Tarasov is at large. The U.S. Attorney’s Officer for the Northern District of Georgia – the office prosecuting the troika – said it would not answer questions on where Ostapenko and Oleynik were arrested or if they need to be extradited to the United States before facing trial.
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Cryptomixers have been a repeated target of U.S. enforcement action, including sanctions, due to their popularity in the criminal underground as a means for obscuring illicit funds. A decision by a U.S. federal appeals court in November 2024 may stymie those efforts after a three-judge panel ruled that cryptomixer code does not constitute “property” subject to sanctions (see: US Appeals Court Reverses Tornado Cash Sanctions).
Blender was the first virtual currency mixer to come under U.S. sanctions, in May 2022. Blender’s operators advertised a “No Logs Policy,” said they deleted user transactions and touted the fact that they didn’t require users to provide any identifying information beyond a bitcoin wallet to receive mixed funds. Blender began operations in 2018 and shut down after the Treasury sanctions. Sinbad started up a few months later.
Tarasov and Oleynik are charged with one count each of money laundering conspiracy and operating an unlicensed money-transmitting business. Ostapenko faces an additional charge of operating an unlicensed money-transmitting business.