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Google Uncovers APT41’s Use of Open Source GC2 Tool to Target Media and Job Sites

April 17, 2023

A Chinese nation-state group targeted an unnamed Taiwanese media organization to deliver an open source red teaming tool known as Google Command and Control (GC2) amid broader abuse of Google’s infrastructure for malicious ends.

The tech giant’s Threat Analysis Group (TAG) attributed the campaign to a threat actor it tracks under the geological and geographical-themed moniker HOODOO, which is also known by the names APT41, Barium, Bronze Atlas, Wicked Panda, and Winnti.

The starting point of the attack is a phishing email that contains links to a password-protected file hosted on Google Drive, which, in turn, incorporates the GC2 tool to read commands from Google Sheets and exfiltrate data using the cloud storage service.

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