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HollowGraph malware uses Microsoft 365 calendar for command and control

Objectivity score: 77
A new malware component called HollowGraph has been identified by Group-IB that leverages the calendar feature within compromised Microsoft 365 mailboxes to act as a command-and-control channel, according to a recent report by Bleeping Computer.HollowGraph, believed to be part of the Cavern command-and-control framework, targets organizations in Israel for espionage purposes. The malware uses hard...
HollowGraph malware uses Microsoft 365 calendar for command and control | Huntaegis