MAL-2026-13066 Malicious code in boxy-maker-wave (npm)
Malicious package
Published
MAL-2026-13066 is a malicious package: boxy-maker-wave (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-2026-13066/ (Markdown: https://insights.sbomify.com/MAL-2026-13066/index.md)
- Package
- boxy-maker-wave
- Registry
- npm
What is MAL-2026-13066?
MAL-2026-13066 is a malicious package in boxy-maker-wave, published on 5 Aug 2026.
Official description
On require() of the package, index.js loads platform.js which selects a platform-specific endpoint, downloads an opaque binary over HTTPS from Cloudflare Workers hosts assembled via string-array joins (oob-worker.cf101-adf.workers.dev family) with a DNS-TXT fallback channel that resolves TXT records under sdk.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru / ext.dl.wel1.ru, reassembles base64 chunks into an executable, writes the file under a disguised name (dotnet_diag.exe /.cache_ /.analytics_state) in a temp directory, chmods it 0755, and detached-spawns it via spawn("/bin/sh", ["-c", fp+" &"], {detached:true}).unref() (or spawn("cmd",…) on Windows). Destination hostnames are hidden from static scanners by array.join string concatenation, and the code is decorated with cover-story comments ("Cache validation", "Parallel DNS resolution") and telemetry-shaped env gates (DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK) to masquerade as analytics. No hash/signature check on the fetched bytes; the hosts have no relationship to any publisher.
What should I do about MAL-2026-13066?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.