APT41 malware abuses Google Calendar for stealthy C2 communication

The Chinese APT41 hacking group uses a new malware named 'ToughProgress' that abuses Google Calendar for command-and-control (C2) operations, hiding malicious activity behind a trusted cloud service. [...]


source https://www.bleepingcomputer.com/news/security/apt41-malware-abuses-google-calendar-for-stealthy-c2-communication/