MAL-2026-13131 Malicious code in dolyame-boxy-stories (npm)
Malicious package
Published
MAL-2026-13131 is a malicious package: dolyame-boxy-stories (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-2026-13131/ (Markdown: https://insights.sbomify.com/MAL-2026-13131/index.md)
- Package
- dolyame-boxy-stories
- Registry
- npm
What is MAL-2026-13131?
MAL-2026-13131 is a malicious package in dolyame-boxy-stories, published on 5 Aug 2026.
Official description
On require, index.js loads bridge.js which selects a platform-specific endpoint and downloads a binary from one of three attacker-controlled hosts whose names are reconstructed at runtime via string.join() to evade static detection (oob-worker.cf103-070.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS TXT-record fallback under sdk.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under disguised filenames (.cache<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0755, and spawned detached via /bin/sh -c or cmd /c start. A marker file.analytics_state and opt-out env vars DISABLE_TELEMETRY / ANALYTICS_OPT_OUT provide cover-story naming; the package's declared purpose is unrelated to any telemetry or analytics function, and the default code path executes the remote binary. This is a load-time full-host RCE dropper.
What should I do about MAL-2026-13131?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.