Using Trusted Protocols Against You: Gmail as a C2 Mechanism...

Socket's Threat Research Team discovered malicious Python packages on PyPI that use Gmail's SMTP protocol for command and control, exfiltrating data and executing commands. These packages, which have since been removed, exploited Gmail's trusted protocol to create tunnels that are less likely to be detected by firewalls and endpoint systems. Notably, packages such as Coffin-Codes-Pro and Coffin-Codes-Net2 used hardcoded credentials to establish connections, enabling threat actors to execute a range of malicious activities including transferring files, executing commands, and potentially accessing sensitive internal systems. These packages, linked to email accounts like `[email protected]` and `[email protected]`, demonstrated the potential for serious security breaches by allowing attackers to exploit network vulnerabilities covertly. To mitigate such threats, recommendations include monitoring unusual outbound connections, verifying package authenticity, conducting regular dependency audits, and using tools like the Socket GitHub app for scanning dependencies.

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