Infosecurity Magazine·4 min read·hard
New HollowGraph Malware Hijacks Microsoft 365 Calendars for Covert C2
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Beth Maundrill
✦AI Summary
A sophisticated new malware called HollowGraph is using Microsoft 365 calendars as a covert command and control channel to target Israeli organizations. Researchers believe the malware is linked to a well-resourced adversary with technical similarities to the Iranian-nexus group Lyceum.
A newly identified Windows malware sample abuses Microsoft Graph API to transform a compromised Microsoft 365 calendar into a covert two-way command and control (C2) channel.
technologyworld
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