Which versions of pyminor are malicious?

The following PyPI versions of pyminor are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate pyminor if I installed it?

pyminor 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.

I already installed pyminor — how do I know if it already compromised me?

If pyminor 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.

Is pyminor part of a known attack campaign?

Yes — pyminor is associated with the RLMA-2024-04537 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find pyminor across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for pyminor (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 pyminor across your stack and pipelines.

Malicious package

pyminorPyPI

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

MAL-2023-8582

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

pip uninstall pyminor

What this malware does

Malicious packages campaign targeting developers, payload is hidden using Steganography, exfiltrate host information

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

f4b65ae360c6ccb0733894c0d6db59f44827dad1169ff36141aa391ef89f51a0

f982baa559bfe9b94cd90e10c6b7e7e7a78449cf4b8eab4b6fbfabd802d059ba

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for pyminor (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 pyminor across your stack and pipelines.
If you installed it — respond
pyminor 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.
Did it already run?
If pyminor 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.
How O3 protects you
O3 blocks pyminor 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. pyminor 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-2024-04537

References

Credits

Checkmarx · finder
ReversingLabs · finder

Detect & block this

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

Malware detection Runtime egress monitoring