# MAL-2025-191701: Malicious code in chimera-sandbox-extensions (PyPI)


- **Type:** Malicious package
- **Package:** `chimera-sandbox-extensions` (PyPI)
- **Published:** 9 Jun 2025

## What is MAL-2025-191701?

MAL-2025-191701 is a malicious package in chimera-sandbox-extensions, published on 9 Jun 2025. 

### Official description

When started, the code attempts to access multiple domains based on the generating algorithm. Once one valid is found, it downloads a script and executes it. The script collects data about the environment (e.g. attempts to get cloud tokens from the metadata URLs, collects some env variables) and sends them further to the remote target, which then decides about next stage code.

It may be targetting https://engineering.grab.com/chimera-sandbox

---

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

Campaign: 2025-06-chimera-sandbox-extensions

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.

 - Downloads and executes a remote malicious script.

## What should I do about MAL-2025-191701?

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-2025-191701 is a malicious package: chimera-sandbox-extensions (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-2025-191701/ (Markdown: https://insights.sbomify.com/MAL-2025-191701/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2025-191701

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From sbomify Insights: https://insights.sbomify.com/MAL-2025-191701/
Summaries are generated and may contain mistakes; the official description above is the record.