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Malicious package

package-lib8127PyPI

Malicious code in package-lib8127 (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2024-11653
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall package-lib8127

What this malware does

Package contains CStealer, a known infostealer, starting on importing the module.

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

Campaign: 2024-09-cstealer

Reasons (based on the campaign):

  • infostealer

  • infostealer:cstealer

Malicious versions

1 flagged
0.1

Indicators of compromise (SHA-256)

405c3386e34c4a6fca3f897cdbe4e9586c5cb5c6d279aee9aa2f156aabffabc7
d9d7feadd0badfdc1588fa10de040419c37b7a760ee8174c819c2b78b1b05749
2e0e446a5a40a8c6a1ea1041fa0fc875ef0dab2a8ad10cc74e459221906e6851
3cf0541bba671db30b333009f5916f72ed6f47323e49d2b7675bc508a7cc2606
f1058a08ee1c03de71c882d875c6652cddcd05f527c6d0f3f0dedade29730332

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 package-lib8127 (version 0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging package-lib8127 across your stack and pipelines.

  2. If you installed it — respond

    package-lib8127 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 package-lib8127 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 package-lib8127 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. package-lib8127 on PyPI has been identified as a malicious package (version 0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-111092024-09-cstealerRLUA-2026-00580

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks package-lib8127-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.