MAL-2026-12232 Malicious code in tinkoff-boxy-gitlab-labels (npm)

On require of the package, index.js loads runtime.js which selects a platform-specific payload path, fetches an opaque native binary from string-split-obfuscated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, cf101-adf, cf99-9b3, cf103-070.workers.dev) with a DNS-TXT chunked base64 fallback across hosts assembled from fragments (tin.dl.well1.site, tina.dl.well1.site, ldr.dl.well1.site, win.dl.well1.site). The downloaded bytes are written to /tmp or %TEMP% under randomized names disguised as system tooling (.cache<hex>, dotnet_diag_<hex>.exe), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe. Hostnames are reconstructed at runtime via Array.join to hide them from static inspection, and a silent stderr no-op is used to suppress logging. Behavior includes opt-out env checks, host shuffling, and a stamp file to run only periodically.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.