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Malicious package

python3-6PyPI

Malicious code in python3-6 (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-191843
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall python3-6

What this malware does

During installation, the obfuscated code is run and connect with a remote server. In the current version, the code just opens a URL without exfiltrating any data. However, the high obfuscation level, including using an IP as the encryption key, makes the intentions unclear

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2025-10-python3-6

Reasons (based on the campaign):

  • obfuscation

  • other

Malicious versions

3 flagged
0.1.00.2.00.3.0

Indicators of compromise (SHA-256)

f0403d13a382541954140edda4f3e859118e2ef2051dce6f9474bd0b2d4e5899
d48e27507362baa15b8e41d1554bce82077fcc870112ab6cb4d17694b47c8ef3
419f7565a54a5a113d57ec017de6b78e9e38b82aa60a88f161be657eb2d273d4

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for python3-6 (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging python3-6 across your stack and pipelines.

  2. If you installed it — respond

    python3-6 is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If python3-6 was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks python3-6 before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. python3-6 on PyPI has been identified as a malicious package (versions 0.1.0, 0.2.0, 0.3.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2025-10-python3-6

References

Credits

  • Kamil Mańkowski (kam193)

Detect & block this

O3 blocks python3-6-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

python3-6 (PyPI) malicious package — MAL-2025-191843 | O3 Security