Shai-Hulud copycat campaign targets Python developers through PyPI typosquatting

GitLab's Vulnerability Research team uncovered a coordinated supply chain attack on PyPI, which involved deploying a copy of the Shai-Hulud malware through five malicious packages, including typosquats of popular Python libraries and a compromised legitimate project. The malware executed automatically upon installation, stealing credentials from CI/CD environments across major cloud providers and propagating itself using stolen credentials. The attack utilized Python's .pth file mechanism for execution, bypassing the need for explicit imports, and involved complex payload obfuscation techniques, including ROT-N ciphers and AES encryption. GitLab was not directly affected but shared their findings to aid the broader security community, highlighting the need for vigilance as independent actors continue to exploit the Shai-Hulud toolkit across various ecosystems.

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