# MAL-2025-3436: Malicious code in bitcoinlib-dev (PyPI)


- **Type:** Malicious package
- **Package:** `bitcoinlib-dev` (PyPI)
- **Published:** 30 Mar 2025
- **Also known as:** SNYK-PYTHON-BITCOINLIBDEV-9667327

## What is MAL-2025-3436?

MAL-2025-3436 is a malicious package in bitcoinlib-dev, published on 30 Mar 2025. 

### Official description

It overwrites the 'clw' command from legit bitconinlib package and attempts to exfiltrate its database on the usage.

As a context, it appears to be created to lure users seeking for help with the bitconinlib package: https://github.com/1200wd/bitcoinlib/issues/455#issuecomment-2764513104

---

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

Campaign: 2025-03-bitcoinlibdbfix

Reasons (based on the campaign):

 - files-exfiltration

 - crypto-related

 - action-hidden-in-lib-usage

 - exfiltration-crypto

## What should I do about MAL-2025-3436?

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-2025-3436 is a malicious package: bitcoinlib-dev (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-2025-3436/ (Markdown: https://insights.sbomify.com/MAL-2025-3436/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2025-3436

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From sbomify Insights: https://insights.sbomify.com/MAL-2025-3436/
Summaries are generated and may contain mistakes; the official description above is the record.