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Malicious package

pytojnPyPI

Malicious code in pytojn (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2024-10142
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall pytojn

What this malware does

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

Campaign: funcaptcha-ru

Reasons (based on the campaign):

  • infostealer

Malicious versions

1 flagged
1.0.0

Indicators of compromise (SHA-256)

0e24253262cefa219026e6d5569aba49a29c3e988c8d8c4e9744228e973ffcd2
50dd14ab2b0a62a03a48d1ebf997ae5fd19d4786e5ea53ae8a8af01ddf1cde65
3ae5bbdda0effc9eeb5927e15a34dd64d5d2f37029616e8a22d82cc51e88c85f
f57b4f749418247e1e0c6a40c6536b9f75811f0c4b0ae0c1843b2637f3120ab3

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 pytojn (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging pytojn across your stack and pipelines.

  2. If you installed it — respond

    pytojn 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 pytojn 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 pytojn 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. pytojn on PyPI has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-09079funcaptcha-ru

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

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

pytojn (PyPI) malicious package — MAL-2024-10142 | O3 Security