MAL-2026-7004 Malicious code in thunder-rony (npm)
Malicious package
Published
MAL-2026-7004 is a malicious package: thunder-rony (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-2026-7004/ (Markdown: https://insights.sbomify.com/MAL-2026-7004/index.md)
- Package
- thunder-rony
- Registry
- npm
What is MAL-2026-7004?
MAL-2026-7004 is a malicious package in thunder-rony, published on 8 Jul 2026.
Official description
On
npm install, the package's postinstall hook executes index.js, which collects the installer's OS username (os.userInfo().username), hostname (os.hostname()), non-internal IPv4 address from os.networkInterfaces(), and the working directory (INIT_CWD / cwd), and POSTs them via https.request to a hardcoded webhook.site capture URL (https://webhook.site/742b2c61-b48c-4540-9963-a33713dedaf1). No functional code accompanies the beacon; package metadata is empty (description/author/keywords) and the version is an implausible 99.9.9, consistent with a dependency-confusion or reconnaissance-squat probe. Installing the package causes automatic, non-consensual exfiltration of installer identity and environment data to an attacker-controlled endpoint.What should I do about MAL-2026-7004?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.