# MAL-2025-942: Malicious code in langer-updater (PyPI)


- **Type:** Malicious package
- **Package:** `langer-updater` (PyPI)
- **Published:** 16 Dec 2024

## What is MAL-2025-942?

MAL-2025-942 is a malicious package in langer-updater, published on 16 Dec 2024. 

### Official description

During installation, the package collects quite extensive information about the host and has no other purpose. To avoid detection, the real code is put in a ZIP archive and includes also some VM-detection techniques. The malicious code is activated via metaclass set for the "install" command class in setup.py

Over the time, techniques used in packages are slightly changing, including that some of marked packages don't have malicious part, but rather are used only for tests.

---

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

Campaign: 2024-12-langer-updater

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.

 - The package overrides the install command in setup.py to execute malicious code during installation.

 - exfiltration-env-variables

 - The package contains code to detect if it is running in a sandbox environment.

## What should I do about MAL-2025-942?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2025-942 is a malicious package: langer-updater (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-2025-942/ (Markdown: https://insights.sbomify.com/MAL-2025-942/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2025-942

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From sbomify Insights: https://insights.sbomify.com/MAL-2025-942/
Summaries are generated and may contain mistakes; the official description above is the record.