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Part of a larger attack: 2025-03-blackwolf published 8 malicious packages. See the full campaign →
Malicious package

bbllaacckkwwoollff6ad8f762PyPI

Advisory published Updated

bbllaacckkwwoollff6ad8f762 is a confirmed malicious PyPI package (MAL-2025-3435) that steals credentials and exfiltrates sensitive data (malicious versions 0.1, 0.2, 0.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in bbllaacckkwwoollff6ad8f762 (PyPI)

MAL-2025-3435
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall bbllaacckkwwoollff6ad8f762

What this malware does

During installation, the code either exfiltrate some information about the system or download and execute remote code

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

Campaign: 2025-03-blackwolf

Reasons (based on the campaign):

  • The package overrides the install command in setup.py to execute malicious code during installation.

  • exfiltration-generic

  • Downloads and executes a remote malicious script.

Malicious versions

3 flagged
0.10.20.3

Indicators of compromise (SHA-256)

1a7ca5dd9246f809a111116ae7063c65b60926ec2bd67a7e9c8cd141084ea05a
a0c16b7657653def9f66b50e8d66c0edf6cbd46d2134e1f6762a419236d51e15
4d90faddd66012c6f6fadc95f0a0e846b70504ed6ea47a65576ef5c4067a4985
2ebe8d10a9c8f194337ad8c083971ab38c94aef91942c7c9e3cfafd602f2a289
3efc7c8b48c8361aaa7526270e1ad27546670b25b60ced6c5d920104ed7adabc

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for bbllaacckkwwoollff6ad8f762 (3 malicious versions).

  2. If you installed it — respond

    bbllaacckkwwoollff6ad8f762 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 bbllaacckkwwoollff6ad8f762 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. bbllaacckkwwoollff6ad8f762 on PyPI has been identified as a malicious package (versions 0.1, 0.2, 0.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-024942025-03-blackwolfRLUA-2026-00141

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks bbllaacckkwwoollff6ad8f762-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

bbllaacckkwwoollff6ad8f762 (PyPI) malicious package — MAL-2025-3435 | O3 Security