New HollowGraph malware uses Microsoft Graph for stealthy C2 comms

A malicious component dubbed HollowGraph uses the calendar feature in compromised Microsoft 365 mailboxes as a command-and-control channel to receive attacker commands and exfiltrate stolen data.

First seen on bleepingcomputer.com

Jump to article: www.bleepingcomputer.com/news/security/new-hollowgraph-malware-uses-microsoft-graph-for-stealthy-c2-comms/