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)
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):
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The package overrides the install command in setup.py to execute malicious code during installation.
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exfiltration-env-variables
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typosquatting
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for fkaks (version 0.0.1).
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.
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
Campaign
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.