MAL-2025-191622 Malicious code in donotinstall (PyPI)
Malicious package
Published
MAL-2025-191622 is a malicious package: donotinstall (PyPI). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2025-191622/ (Markdown: https://insights.sbomify.com/MAL-2025-191622/index.md)
- Package
- donotinstall
- Registry
- PyPI
What is MAL-2025-191622?
MAL-2025-191622 is a malicious package in donotinstall, published on 26 Oct 2025.
Official description
Package contains obfuscated reverse shell. However, it connects with a local IP only, thus it's much more a test than a malicious action
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: 2025-10-donotinstall
Reasons (based on the campaign):
The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.
obfuscation
What should I do about MAL-2025-191622?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.