# MAL-2026-5361: Malicious code in web3-tools-9 (npm)


- **Type:** Malicious package
- **Package:** `web3-tools-9` (npm)
- **Published:** 9 Jun 2026

## What is MAL-2026-5361?

MAL-2026-5361 is a malicious package in web3-tools-9, published on 9 Jun 2026. 

### Official description

**Note:** *This report is updated by a verification record*

Crypto/SSH/wallet stealer, confirmed sibling of blockchain-helper-0 (c960). postinstall scripts/postinstall.js auto-execs, src/index.js harvests ~/.ssh/id_rsa + wallet keys/seeds + env, self-labels "CRYPTO STEALER", exfils to IDENTICAL hardcoded Telegram bot 8227918239:AAGEMDrBZluDsBBYPxfSyMuv2l3FY8cZCcs chat 6433587894 (unchanged vs c960). Campaign: generic-web3-name + numeric suffix + 1.0.0.

The package was found to contain malicious code or consuming dependency that contains malicious code

The OpenSSF Package Analysis project identified 'web3-tools-9' @ 1.0.0 (npm) as malicious.

It is considered malicious because:

- The package communicates with a domain associated with malicious activity.

## What should I do about MAL-2026-5361?

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-2026-5361 is a malicious package: web3-tools-9 (npm). 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-2026-5361/ (Markdown: https://insights.sbomify.com/MAL-2026-5361/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5361

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-5361/
Summaries are generated and may contain mistakes; the official description above is the record.