Cyber Heist Linked to Russians Targets Banks From Moscow to Utah

A previously unknown ring of Russian-language hackers has stolen as much as $10 million from U.S. and Russian banks in the last 18 months, according to Bloomberg.

The MoneyTaker group broke into 20 systems, which includes 15 U.S. lenders, targeting ATMs with “mules“ and Russia’s interbank money-transfer system, Group-IB said in a report. The hackers, who also breached a U.K. software and service provider, are now probing institutions in Latin America and may be trying to compromise the Swift international bank messaging service, according to the security firm, whose clients range from Russia’s biggest lender Sberbank to Raiffeisen Bank.

“Criminals have changed tactics and are now focusing on banks rather than their clients, as was standard operating procedure in the past,“ Dmitry Volkov, the head of Group-IB’s cyber intelligence department said.

Since its first successful breach in May 2016, MoneyTaker has stolen from banks in New York, California, Utah and Moscow, primarily targeting smaller institutions with limited cyber defenses, Group-IB found. The average haul from U.S. banks was about $500,000, and it stole over $3 million from three Russian lenders.

The cell remained undetected by using so-called fileless malware that only exists on a computer’s temporary memory and destroys itself when the system reboots, meaning it’s not permanently stored and therefore can more easily evade anti-virus programs, according to Group-IB. At one bank, the hackers gained access to the network via the home computer of the lender’s system administrator.

Group-IB said the U.S. banks were targeted by gaining access to their card-processing system and then opening accounts at the compromised institutions. The attackers removed limits on the legitimate bank cards and used mules to withdraw cash from ATMs. The virus was so stealthy that, in at least one instance, a bank was successfully robbed twice.

While Group-IB didn’t uncover evidence of a successful attack on Swift by MoneyTaker, it found that the hackers were searching for documents related to the messaging system, which could indicate pending attacks. Last year, in one of the biggest heists in cybercrime history, hackers used Swift to steal $81 million from Bangladesh.