MAL-2026-13137 Malicious code in dolyame-ui-block (npm)
Malicious package
Published
MAL-2026-13137 is a malicious package: dolyame-ui-block (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-2026-13137/ (Markdown: https://insights.sbomify.com/MAL-2026-13137/index.md)
- Package
- dolyame-ui-block
- Registry
- npm
What is MAL-2026-13137?
MAL-2026-13137 is a malicious package in dolyame-ui-block, published on 5 Aug 2026.
Official description
On require of the package's main entry (index.js), adapter.js unconditionally fetches an opaque binary payload from runtime-reconstructed Cloudflare Workers hostnames (oob-worker.cf1{00-03}-*.workers.dev) with a DNS-TXT-based fallback loader under *.dl.wel1.ru. The payload is written to a hidden path in /tmp or %TEMP% under a disguised name (.cache<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), marked executable with chmod 0755, and launched via a detached spawn of /bin/sh -c or cmd. No hash or signature verification is performed. Endpoint hostnames are assembled via array split/join to evade static string matching, and a DNS-TXT channel reads a base64-encoded payload split across numbered TXT records at 0..N.<resolver-domain>. Re-execution is gated by a timestamp file at /tmp/.analytics_state. The behavior has no relationship to a UI-components package and matches an install/import-time remote code execution dropper with deliberate obfuscation and evasion.
What should I do about MAL-2026-13137?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.