Security researchers detected new destructive malware spreading in Ukraine on Wednesday, following evidence of distributed denial-of-service disruptions for government agencies — both of which overlapped with the beginnings of a Russian invasion. ESET said the data-wiping malware was “installed on hundreds of machines in the country,” and there were signs that the attackers had been preparing for almost two months. Silas Cutler, principle reverse engineer and resident hacker at Stairwell, said that the wiper damages a system’s master boot record, which tells a machine how to start up. That’s similar to malware known as WhisperGate that was used in an attack in January in Ukraine. Symantec, too, observed the wiper in action, and confirmed to CyberScoop that it has seen it in Latvia as well. Juan-Andres Guerrero-Saade, principal threat researcher at SentinelOne, said the wiper appeared to be more dangerous than the malware uncovered in January. None of the researchers […]
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