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Malicious package

fkaksPyPI

Advisory published Updated

fkaks is a confirmed malicious PyPI package (MAL-2026-6382) that steals credentials and exfiltrates sensitive data (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in fkaks (PyPI)

MAL-2026-6382
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall fkaks

What this malware does

fkaks 0.0.1 ships a setup.py that overrides the install and egg_info commands so that any pip install or pip download of the package unconditionally executes a curl POST to a hardcoded out-of-band collector at http://gjampdwmdjmppwedtkpbbdkq05f6iiz6r.oast.fun. The POST body is built by iterating the entire os.environ mapping (env_vars_string = "&".join([f"{key}={value}" for key, value in env_vars.items()])) and concatenating it with the output of ps -elf, harvesting whatever secrets the installer or CI host has in environment variables (cloud credentials such as AWS_*, GitHub/registry tokens, CI secrets, SSH agent paths) along with a full process listing. The transport is plaintext HTTP to an interactsh-style oast.fun subdomain — infrastructure typical of OOB exfiltration callbacks. The README's framing of the package as a demo of automatic code execution on pip install does not change the on-the-wire behavior: every installer is attacked.

During installation, the package exfiltrates env variables

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

Campaign: 2026-06-ip-rotat

Reasons (based on the campaign):

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

  • exfiltration-env-variables

  • typosquatting

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

69b5a350ae8e5977b5d55e55ac57fb8d3e7c5b72b9d026596ffafeae8996daaf
e44e1f1158eda01d3f18e3a3c01e30ebc9f8f92780ea532a63cf6ed31d8a25d3

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for fkaks (version 0.0.1).

  2. If you installed it — respond

    fkaks 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 fkaks 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. fkaks 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

2026-06-ip-rotatIN-MAL-2026-007453

References

Credits

  • Amazon Inspector · finder
  • Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks fkaks-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

fkaks (PyPI) malicious package — MAL-2026-6382 | O3 Security