# MAL-2025-191814: Malicious code in perfviewer (PyPI)


- **Type:** Malicious package
- **Package:** `perfviewer` (PyPI)
- **Published:** 16 Nov 2025

## What is MAL-2025-191814?

MAL-2025-191814 is a malicious package in perfviewer, published on 16 Nov 2025. 

### Official description

During installation, code downloads and starts an executable and a DLL library. After starting them, files are removed from the disk. The executable has been recognized as AsyncRAT

This is a copy of legitimate "rich" package.

---

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

Campaign: 2025-11-perfviewer

Reasons (based on the campaign):

 - Downloads and executes a remote executable.

 - clones-real-package

 - malware

## What should I do about MAL-2025-191814?

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-2025-191814 is a malicious package: perfviewer (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-2025-191814/ (Markdown: https://insights.sbomify.com/MAL-2025-191814/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2025-191814

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From sbomify Insights: https://insights.sbomify.com/MAL-2025-191814/
Summaries are generated and may contain mistakes; the official description above is the record.