Google Calendar Hijacked: APT41’s Crafty Malware Scheme Unveiled!
China-linked APT41 decided to turn Google Calendar into their personal malware command center. By using the platform as a stealthy command-and-control channel for their TOUGHPROGRESS malware, they targeted government entities. Who knew scheduling conflicts could involve malware and not just double-booked meetings?

Hot Take:
Who knew that Google Calendar could multitask as both your personal assistant and a top-secret espionage tool? APT41 seems to be the modern-day version of the digital James Bond, using a calendar to pencil in their malware activities. Perhaps it’s time to rethink those shared calendar invites!
Key Points:
- APT41, a China-linked group, used Google Calendar for command and control (C2) of TOUGHPROGRESS malware.
- The malware was distributed via a compromised government website with spear-phishing tactics.
- TOUGHPROGRESS operates in three stages, utilizing techniques like process hollowing and advanced obfuscation.
- Google has developed measures to dismantle the malware’s infrastructure and aid affected organizations.
- APT41’s creativity in using Google Calendar highlights the increasing sophistication of threat actors.
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