APT41 Hacker Group Uses New 'ToughProgress' Malware to Exploit Google Calendar for Stealthy C2 Operations

The Chinese hacker group APT41 is using a new malware called 'ToughProgress' that exploits Google Calendar for command and control (C2) operations, thereby concealing its malicious activities behind a trusted cloud service. This malware enables attackers to communicate stealthily by using calendar events to transmit commands and data.