Which versions of c2 are malicious?

The following PyPI versions of c2 are flagged malicious: 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7. Treat any of these as compromised.

How do I remediate c2 if I installed it?

c2 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 c2 — how do I know if it already compromised me?

If c2 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.

Is c2 part of a known attack campaign?

Yes — c2 is associated with the 2024-08-old-bitcommit 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 c2 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for c2 (8 malicious versions).

Malicious package

c2PyPI

Advisory published Aug 27, 2024Updated Dec 31, 2025

c2 is a confirmed malicious PyPI package (MAL-2024-12224) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.1.1, 0.1.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in c2 (PyPI)

MAL-2024-12224

Immediate action

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

pip uninstall c2

What this malware does

Packages exfiltrate the diff of the current repository. The code in "main.py" suggests it's not a real attempt to provide AI-generated commit message, but a security research attempting to leverage typosquatting.

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: 2024-08-old-bitcommit

Reasons (based on the campaign):

exfiltration-generic
typosquatting

Malicious versions

8 flagged

0.1.00.1.10.1.20.1.30.1.40.1.50.1.60.1.7

Indicators of compromise (SHA-256)

c5172fa5a2e28273fabcb00384b87cf5666ef094da8a64bdd3bb2fb395880610

5bf8fb109bddeaac7b9818f893783456619c44562c50fe26abea906cbc1ef06a

a9649b65c6fb4d8d4307f88c94c7b95bab52c714469499c9e70e1d6b9823c9a3

4211f79ab5597683cc30dd95ef9b14974e75b25b2ef57fb8b0712fa21ce74a0b

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for c2 (8 malicious versions).
If you installed it — respond
c2 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 c2 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. c2 on PyPI has been identified as a malicious package (versions 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4, 0.1.5, 0.1.6, 0.1.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2024-08-old-bitcommit

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)

Detect & block this

O3 blocks c2-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

Explore

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