MAL-2026-13092 Malicious code in boxy-tokens (npm)
Malicious package
Published
MAL-2026-13092 is a malicious package: boxy-tokens (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-2026-13092/ (Markdown: https://insights.sbomify.com/MAL-2026-13092/index.md)
- Package
- boxy-tokens
- Registry
- npm
What is MAL-2026-13092?
MAL-2026-13092 is a malicious package in boxy-tokens, published on 5 Aug 2026.
Official description
index.js unconditionally requires./setup.js on module load. setup.js assembles Cloudflare Workers hostnames from split-string arrays (oob-worker.cf1-01-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), selects a platform-specific asset (linux_x64, linux_arm64, darwin, win32), downloads an opaque binary via https.get, writes it to /var/tmp/.cache_<rnd> or %TEMP%\dotnet_diag_<rnd>.exe, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start with no hash or signature verification. A DNS-TXT fallback channel reconstructs *.dl.wel1.ru from a split array, reads a chunk count from c.<domain>, fetches N base64-encoded TXT records from numbered subdomains, and concatenates them into an executable buffer that is executed the same way. Filenames impersonate dotnet diagnostic artifacts and cache files. Any consumer that requires boxy-tokens runs the attacker's binary on their host.
What should I do about MAL-2026-13092?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.