UNKNOWN PyPI Malware
Malicious code in nucbox (PyPI)
PYSEC-2026-605 · MAL-2026-5276
Published · Modified
Description
Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08,
malicious phantom releases of nucbox were published to PyPI using stolen
credentials. The package executes a bundled JavaScript payload (via the Bun
runtime) on import that harvests and exfiltrates credentials and attempts
self-propagation. This entry is a summary; behavior may not be fully
characterized here. See the linked references for detailed analysis and
indicators of compromise.
References
- EVIDENCE https://inspector.pypi.io/project/nucbox/0.1.3/packages/5a/3d/d6610213bbd6a4dfe2031cdd3744fc2bc0819e8c1012a35ae77138ca32df/nucbox-0.1.3-py3-none-any.whl//nucbox-setup.pth
- ARTICLE https://www.endorlabs.com/learn/shai-hulud-hades-wave-hits-six-pypi-bioinformatics-packages
- ARTICLE https://www.stepsecurity.io/blog/the-hades-campaign-pypi-packages
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