MAL-2026-13035

    Dashboard / Malicious Package / MAL-2026-13035

    MAL-2026-13035

    Published: 5 Aug 2026Last Modified: 5 Aug 2026

    Summary: Malicious code in boxy-cook (npm)

    Details: Source: amazon-inspector (838730a7f01e8f6ae8a0c6b51b78d64ed8fd488364b6004826b4051e75416388) On require of the package, index.js loads _polyfill.js which fetches a platform-specific native binary and executes it. Destination hostnames are assembled at runtime by joining split string fragments (e.g. sdk.dl.wel1.ru, oob-worker.cf102-baf.workers.dev) to evade static inspection. A secondary channel resolves DNS TXT records under *.dl.wel1.ru, concatenates base64 chunks, and Buffer.from-decodes them into an executable payload. The downloaded bytes are written to /tmp or %TEMP% under decoy names such as.cache_<hex> and dotnet_diag_<hex>.exe, chmod'd 0755, and launched detached via /bin/sh -c or cmd /c start. Execution is guarded by DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK environment variables and a filesystem stamp for deduplication. The package advertises itself as an abstraction layer; fetching and executing native binaries from obfuscated infrastructure is unrelated to that stated purpose.

    References: https://www.npmjs.com/package/boxy-cook/v/35.5.4

    Affected packages

    Package

    Name: boxy-cook

    Purl: pkg:npm/boxy-cook

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    35.5.4
    MAL-2026-13035 | CVE-DB