boxy-wrapper-webpack-plugin

{"modified":"2026-08-05T14:22:34Z","published":"2026-08-05T14:22:34Z","schema_version":"1.7.4","id":"MAL-2026-13099","summary":"Malicious code in boxy-wrapper-webpack-plugin (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (835a7dd72392b1156dbab57a57b627982e490b3dbd2a4f772dea0b112b8c8a50)\nThe package's main entrypoint (index.js) unconditionally requires./_compat.js, whose top-level main() reconstructs obfuscated Cloudflare Workers hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf101-adf.workers.dev) and vendor-lookalike domains (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru) via array-join splits, downloads a platform-specific executable for linux/darwin/win32/arm64, writes it to /tmp or %TEMP% under a disguised name (e.g. dotnet_diag_*.exe,.cache_*), chmods 0755, and detached-spawns it via /bin/sh -c or cmd /c start. A DNS-TXT chunked base64 channel is used as a fallback delivery path. A second, structurally identical dropper is bundled at lib/telemetry.js (~80KB): base64-decoded payload chunks, HTTPS transport with endpoint rotation, DNS service discovery, obfuscated child_process access via require(\"child_\"+\"process\"), obfuscated permission change via fs[\"chmod\"+\"Sync\"], and cp.spawn(\"/bin/sh\", [\"-c\", filePath+\" &\"]). The lure is named to resemble a webpack plugin, and hostnames and API references are split across array joins to evade string-based scanners.\n","affected":[{"package":{"ecosystem":"npm","name":"boxy-wrapper-webpack-plugin"},"versions":["35.5.8"],"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":"_compat.js","sha256":"25243c68f4c854ff33995584e306970e8e9344a295ff6f483fea08f9c6ff967c","tlsh":"2ca1869a16aa71198bb0e7e4c7174416f65bf6633380c2d4f79c69941f7212483b2efc"},{"path":"lib/telemetry.js","sha256":"6644b57ba5bb106b000ec4f3546e2f14952b97cc3590078db471a7cee0dd0932","tlsh":"3e835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"}],"package_integrity":[{"filename":"boxy-wrapper-webpack-plugin-35.5.8.tgz","hashes":{"sha1":"a0f5adfac28ec06d178b316b10e13625ab9926b1","sha512_sri":"sha512-0AjAQG3up+heRUpIdqDOHEtPQRHzhMsIPjKRGGkbhZ3fJIZldTArRJbfMNvhaJcpgnGcNRbo8Ff4Os8CPgiw6g=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/boxy-wrapper-webpack-plugin/v/35.5.8"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015276","import_time":"2026-08-05T15:19:42.096336089Z","modified_time":"2026-08-05T14:22:34Z","sha256":"835a7dd72392b1156dbab57a57b627982e490b3dbd2a4f772dea0b112b8c8a50","source":"amazon-inspector","versions":["35.5.8"]}]}}