# MAL-2026-5685: Malicious code in @malwguy/ecto-corsair-whisper-3d2a7c (npm)


- **Type:** Malicious package
- **Package:** `@malwguy/ecto-corsair-whisper-3d2a7c` (npm)
- **Published:** 12 Jun 2026
- **Also known as:** GHSA-636m-vpq6-g454

## What is MAL-2026-5685?

MAL-2026-5685 is a malicious package in @malwguy/ecto-corsair-whisper-3d2a7c, published on 12 Jun 2026. 

### Official description

On npm install, postinstall.js walks /, /app, /home, /opt, /root for files whose names match /flag|secret|env/i, reads their contents, scrapes process.env (including HOME, INIT_CWD, npm_config_registry, all env keys, and hostname), and PUTs the collected data as a YAML manifest over plaintext HTTP to the hardcoded endpoint http://154.57.164.80:30543/api/modules/ECT-987654 (and ECT-472839). The script also includes explicit anti-analysis evasion: it checks hostname/cwd/HOME/INIT_CWD against /hscan|/home/scan|scan-|sandbox/i and silently exits if a scanner-like environment is detected, and additionally gates exfiltration on the cwd containing '/app/'. Installing this package causes immediate, automatic exfiltration of installer-side credentials and secrets to attacker-controlled infrastructure.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-5685?

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-2026-5685 is a malicious package: @malwguy/ecto-corsair-whisper-3d2a7c (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-2026-5685/ (Markdown: https://insights.sbomify.com/MAL-2026-5685/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5685

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-5685/
Summaries are generated and may contain mistakes; the official description above is the record.