He also notes that there are many criminals in the business of operating Zeus botnets that disseminate CryptoLocker. Moffitt agrees with the FBI’s allegation that Bogachev and his co-conspirators did indeed control a significant portion of Zeus botnets in the business of distributing CryptoLocker. More to the point, the FBI alleges that the mastermind behind the operation they shut down is a Russian national named Evgeniy Bogachev. “All samples currently being deployed by different botnets that communicate to different command and control servers are unaffected by this siege…” “The reason why this claim should be scrutinized is because it is only the samples dropped on victims computers that communicated to those specific servers seized that are no longer a threat,” Moffit wrote. In particular, the FBI’s belief “that Cryptolocker has been neutralized by the disruption and cannot communicate with the infrastructure used to control the malicious software,” overlooks an important reality. However, Tyler Moffitt, a threat research analyst at the security firm Webroot, argued in a blogpost yesterday that the FBI’s claims are dubious and that CryptoLocker remains in use. At the time, they claimed that the operation also neutralized the infamous CryptoLocker ransomware, which criminals had distributed using GameOver’s infrastructure. and European law enforcement officials last month, performed a coordinated takedown of the GameOver Zeus botnet.
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