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Malicious package

c8tsdkPyPI

Malicious code in c8tsdk (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-3863
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall c8tsdk

What this malware does

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

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: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

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

The OpenSSF Package Analysis project identified 'c8tsdk' @ 0.0.1 (pypi) as malicious.

It is considered malicious because:

  • The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

e831627bd13431af929f14093cc83d51763edbbb492e709860f63f33848fb9cf
01dfbb911e3de4fd597965587e5def98d9bdb5f53da0acbae695ee0dd516532b
4952c202b499114b83119ae00b4dfcb6ad81c3ff47accd61174ef279f7244eae
48a77041985c637bd9b0e965dc223e5d3815e3c60cd7f8a0615cb5ba5f02d76d

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for c8tsdk (version 0.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging c8tsdk across your stack and pipelines.

  2. If you installed it — respond

    c8tsdk 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 c8tsdk 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 c8tsdk 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. c8tsdk on PyPI has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GENERIC-standard-pypi-install-pentest

References

Credits

  • Kamil Mańkowski (kam193)
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks c8tsdk-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

c8tsdk (PyPI) malicious package — MAL-2025-3863 | O3 Security