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Part of a larger attack: funcaptcha-ru published 161 malicious packages. See the full campaign →
Malicious package

bussardweg4aPyPI

Advisory published Updated

bussardweg4a is a confirmed malicious PyPI package (MAL-2024-9954) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bussardweg4a (PyPI)

MAL-2024-9954
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall bussardweg4a

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)

ec6858d90c664299efc8d3b4bf0b75137eebee478cb5597171906ace9e5ee237
f4ec21083469692dc379e33aa302b872550afcd25b8bd6f6be7e3b5a4c437328
0ab49c266fac67fb0de5ccad791dc60a8af7a20d46b6ac146569018b94345f11
22c092fc2a0aee250b7afa995d5a7558a81cd8f08601e5716d4ee15fa23370be

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for bussardweg4a (version 1.0.0).

  2. If you installed it — respond

    bussardweg4a 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 bussardweg4a was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. bussardweg4a 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-2024-07906funcaptcha-ru

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks bussardweg4a-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

bussardweg4a (PyPI) malicious package — MAL-2024-9954 | O3 Security