Skip to content
OpenAdvisories
Malicious MAL-2026-2820

chainutils

PyPI package · versions 1.0.0

Reported Apr 16, 2026 · Updated Apr 16, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: kam193 (149995e4a1c4d289fa58be2adcab4095dca7c429097ad6735afef8270e7e4cb3)
During import, package triggers malicious code. First, it ensures persistency e.g., through the autostart registry key. Then, based on the encrypted config, an exfiltration demon is started. It registeres the instance in the C2 server and starts searching the file system looking for files matching given filename patterns and then monitoring changes. Discovered files are exfiltrated to a hardcoded remote target.

---

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

Campaign: 2026-04-genosys

Reasons (based on the campaign):

- files-exfiltration

- peristence-autorun

- obfuscation

- The malicious code is intentionally included in a dependency of the package

- exfiltration-credentials

- persistence

- crypto-related

Indicators of compromise

Shown defanged and not clickable. Search any indicator to find other packages using it.

URLs

IP addresses