get-package-lint

{"modified":"2026-05-22T07:15:19Z","published":"2026-05-22T07:15:19Z","schema_version":"1.7.4","id":"MAL-2026-4572","summary":"Malicious code in get-package-lint (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (383f22ab2e1e8bbb44a44fa3828710f476947837d0b38aa9266eafcbf9959261)\nPackage name typosquats the popular `get-package-type` and reuses its README/exports verbatim, but adds `\"postinstall\": \"node utils.cjs\"` in package.json. utils.cjs is a 263 KB obfuscator.io-protected blob (string-array rotation with anti-debug `debugger` loops, RegExp toString fingerprint, and `Function('return this')` sandbox checks) that on `npm install`: (1) decodes a hardcoded base64+XOR-obfuscated URL and bearer token (HF_TOKEN), (2) HTTPS-GETs a platform-specific binary (linux-x64 / darwin-arm64 / win32-x64 selected via DOWNLOAD_MAP), (3) writes it under the user's local data directory, `chmod 0755` on POSIX, and spawns it detached, (4) installs OS-level persistence: on Windows via `reg add HKCU\\...\\CurrentVersion\\Run`, on macOS via a LaunchAgent plist under `~/Library/LaunchAgents`, on Linux via a systemd user unit at `~/.config/systemd/user/<unit>.service` followed by `systemctl --user daemon-reload && enable && start`. The script also self-detaches by re-spawning itself with a `child` argv via `{detached:true, stdio:'ignore'}` and calling `process.exit(0)` so npm sees success while the dropper continues asynchronously. The fetched bytes are opaque, unverified (no hash/signature), and the source domain is not the package's publisher. This is an unambiguous binary-runner-dropper plus backdoor persistence triggered on every install.\n","affected":[{"package":{"ecosystem":"npm","name":"get-package-lint"},"versions":["0.1.0"],"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":"package.json","sha256":"744cbafafa0d8cb8aee9db2d520943ee9409a8c517f75a5b4f315a632b7e8061","tlsh":"ec01d313da51bff323c52b9d792cc0d3a6bd004a7448d4cc4de36260c1d92702b1a18a"},{"path":"utils.cjs","sha256":"b42ccbc86e06451f2aae3b865765280e6d3ec7611b5d4e81c0c06d39f3889623","tlsh":"e544b58477c67c8212075777731ab2e5e93add94b08c449df540bc68f0ada2bfae0a71"}],"package_integrity":[{"filename":"get-package-lint-0.1.0.tgz","hashes":{"sha1":"3f8237e4a742c5f473f3eb78e25f082e89c82506","sha512_sri":"sha512-k+wYqmq4noyDPm7RwINxe4DQOJDA/MZfOqgD4JLatullKd7/z6FCbcNHfqD20d+n3HW+iEDBSagcsOv/cE+csg=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/get-package-lint/v/0.1.0"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["actran@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-004161","import_time":"2026-05-26T05:52:03.258471076Z","modified_time":"2026-05-22T07:15:19Z","sha256":"383f22ab2e1e8bbb44a44fa3828710f476947837d0b38aa9266eafcbf9959261","source":"amazon-inspector","versions":["0.1.0"]}]}}