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Part of a larger attack: 2024-11-byted-dast published 183 malicious packages. See the full campaign →
Malicious package

offline-rl-congestion-controlPyPI

Advisory published Updated

offline-rl-congestion-control is a confirmed malicious PyPI package (MAL-2024-10836) that steals credentials and exfiltrates sensitive data (malicious version 99.6). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in offline-rl-congestion-control (PyPI)

MAL-2024-10836
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall offline-rl-congestion-control

What this malware does

A campaign of probably pentest packages flooding PYPI. Installing the package or importing the module triggers reporting basic info like hostname, path and the username to the package author. There is no other purpose of the package.

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: 2024-11-byted-dast

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.

  • typosquatting

  • dependency-confusion

The OpenSSF Package Analysis project identified 'offline-rl-congestion-control' @ 99.6 (pypi) as malicious.

It is considered malicious because:

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

Malicious versions

1 flagged
99.6

Indicators of compromise (SHA-256)

db8050330a14ea0cbafdbba285a6f38ad157a4477e866ffc82f60f96b83437d1
79b31c834c0a68838e9d940cd1571f4df23545846e9aa0868531295ac3f54fa3
1c144e79980c0e56341b733c970e59592e1f56df443f7d1b41668ca35ec4cc11
ba5c8eb9e302c564a0a3d2dd01fda523fde962250872fd67b4148b115e74b296

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for offline-rl-congestion-control (version 99.6).

  2. If you installed it — respond

    offline-rl-congestion-control 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 offline-rl-congestion-control 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. offline-rl-congestion-control on PyPI has been identified as a malicious package (version 99.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2024-11-byted-dast

References

Credits

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

Detect & block this

O3 blocks offline-rl-congestion-control-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

All malware advisories How O3 detects malware Vulnerability database
offline-rl-congestion-control (PyPI) malicious package — MAL-2024-10836 | O3 Security