boxy-cook

{"modified":"2026-08-05T14:32:58Z","published":"2026-08-05T14:32:58Z","schema_version":"1.7.4","id":"MAL-2026-13035","summary":"Malicious code in boxy-cook (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (838730a7f01e8f6ae8a0c6b51b78d64ed8fd488364b6004826b4051e75416388)\nOn 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.\n","affected":[{"package":{"ecosystem":"npm","name":"boxy-cook"},"versions":["35.5.4"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"_polyfill.js","sha256":"5eee014d9af41a21e878d3fca2dbc3f9e6364055ddeff9ef05bafc97b744cfd8","tlsh":"1fa1b7aa166670194b70dbe0c71b5415f55bf6633380d298fb9ca9981fb312483b2efc"}],"package_integrity":[{"filename":"boxy-cook-35.5.4.tgz","hashes":{"sha1":"2911be13f84736a5dceda04c43504242c7ffa761","sha512_sri":"sha512-IBIja/pi4xHHfKE5++3bu7+19ogvISNnBd0fabWgPFBpHqiPhvoNFGqwFGuC99Du6I92baNkODe+zu85n+YzhA=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/boxy-cook/v/35.5.4"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015345","import_time":"2026-08-05T15:19:46.038899051Z","modified_time":"2026-08-05T14:32:58Z","sha256":"838730a7f01e8f6ae8a0c6b51b78d64ed8fd488364b6004826b4051e75416388","source":"amazon-inspector","versions":["35.5.4"]}]}}