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Malicious package

atomicdecoderssPyPI

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

MAL-2024-9946
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall atomicdecoderss

Malicious versions

3 flagged
1.6.41.6.51.6.6

Indicators of compromise (SHA-256)

618913e886a834380cead3299b0b95cd41b4b632f0f389ed2a8edf6c8b79e913
20f5f545317949c14c9074d2670423cf69d53fc320846f47f4a416019fe24552
0d006a5f80f574b5e10c9c3cd3e35ef2bdfaaf965529b896eb35ffebef3745fe

Detection & response playbook

Malicious package
  1. Find it

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

  2. If you installed it — respond

    Remove atomicdecoderss from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If atomicdecoderss 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 atomicdecoderss 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. atomicdecoderss on PyPI has been identified as a malicious package (versions 1.6.4, 1.6.5, 1.6.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-07842RLUA-2024-10978RLUA-2025-01201

References

Credits

  • ReversingLabs · finder

Detect & block this

O3 blocks atomicdecoderss-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

atomicdecoderss (PyPI) malicious package — MAL-2024-9946 | O3 Security