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pypi · Malicious package advisory

Malware

atlasctf-21-prod-01

MAL-2025-6438

Malicious code in atlasctf-21-prod-01 (PyPI)

Details


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## Source: kam193 (258b21be0ec08a121a4b506eb1cc9409d08b0cfecc9a2b995181dee57254afc7)
On installation or importing, the package attempts to exfiltrate some basic information, e.g. /etc/passwd


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Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.


Campaign: 2025-06-atlasctf


Reasons (based on the campaign):


 - exfiltration-generic


 - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.


 - The package overrides the install command in setup.py to execute malicious code during installation.

Compromised versions (3)

  • 99.99.99
  • 99.99.99.1
  • 0.0.10

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.