MAL-2025-191774 Malicious code in kertash (PyPI)
Malicious package
Published
MAL-2025-191774 is a malicious package: kertash (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-2025-191774/ (Markdown: https://insights.sbomify.com/MAL-2025-191774/index.md)
- Package
- kertash
- Registry
- PyPI
What is MAL-2025-191774?
MAL-2025-191774 is a malicious package in kertash, published on 12 Aug 2025.
Official description
When using methods from the package, it downloads an obfuscated code from Github and puts it in multiple localisation. While it appears that this code is used to perform action user requested, deobfuscation reveals exfiltrating user's data instead.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-08-kertash
Reasons (based on the campaign):
exfiltration-generic
A Telegram webhook is used to send collected data.
obfuscation
action-hidden-in-lib-usage
What should I do about MAL-2025-191774?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.