MAL-2026-10509 Malicious code in test_adminet (npm)
Malicious package
Published
MAL-2026-10509 is a malicious package: test_adminet (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-2026-10509/ (Markdown: https://insights.sbomify.com/MAL-2026-10509/index.md)
- Package
- test_adminet
- Registry
- npm
What is MAL-2026-10509?
MAL-2026-10509 is a malicious package in test_adminet, published on 13 Jul 2026.
Official description
The package's package.json declares a preinstall hook that runs index.js. On npm install, index.js uses child_process.exec to curl-POST installer identifiers ($(whoami), $(hostname), id output) together with the contents of /etc/passwd, /etc/hosts, and /etc/shadow (base64-encoded and stuffed into the User-Agent header) to a hardcoded webhook.site endpoint. The /etc/shadow read attempts to harvest local password hashes; if the install runs as root (common in CI/Docker), hashes are transmitted off-host. Behavior fires automatically on default npm install with no user interaction.
What should I do about MAL-2026-10509?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.