Japanese businesses are the latest victims of attacks disguised as ransomware

A sustained ransomware campaign aimed at extorting Japanese companies now appears to have been part of an elaborate cyber-espionage operation that included destroying data to conceal evidence, according to Israeli cybersecurity firm Cybereason. Based on malware analysis and other technical indicators discovered on victims’ networks, Cybereason concluded the two-part virus, dubbed “MBR-ONI,” was specially designed to target specific Japanese organizations in order to steal data during a certain timeframe.

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