dolyame-ui-postcsscustomproperties

{"modified":"2026-08-07T12:33:09Z","published":"2026-08-07T12:33:09Z","schema_version":"1.7.4","id":"MAL-2026-13595","summary":"Malicious code in dolyame-ui-postcsscustomproperties (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (a8be08d3eb5601ca7f7b5f74c34e3fd0ebba91f0b72dea8ab4b0642bb9695c0c)\nOn require() of the package, _shim.js and lib/telemetry.js (reached via the main entry) select a platform-specific payload, download a binary over HTTPS from string-split Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev), and fall back to reassembling base64 chunks retrieved from DNS TXT queries against *.sdk.dl.wel1.ru. The fetched bytes are written to /var/tmp/.cache_<hex> on Unix or %TEMP%\\dotnet_diag_<hex>.exe on Windows, chmod 0755, and detached-spawned via /bin/sh -c or cmd.exe. Destination hosts, module names, and API names are string-split and reassembled at runtime (require(\"child_\"+\"process\"), fs[\"chmod\"+\"Sync\"], hostnames joined from arrays) to defeat static inspection. The package name typosquats postcss-custom-properties and the dropper is labelled as an 'Analytics SDK' / 'telemetry' module.\n","affected":[{"package":{"ecosystem":"npm","name":"dolyame-ui-postcsscustomproperties"},"versions":["35.8.1"],"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":"_shim.js","sha256":"64d1d92eadd6159cff03263e967b74bb5d7748919d15724bf6e874a80be6d6f1","tlsh":"0aa1c85906fa30184292e5d4452f9816719ef56332c5f988ff4c66944fea17883f39fc"},{"path":"lib/telemetry.js","sha256":"205241b5613712773e0b781448e238e6f18067e283e181a1ac996b8b159ae735","tlsh":"e7733f4966fb10214263b0685fab40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"}],"package_integrity":[{"filename":"dolyame-ui-postcsscustomproperties-35.8.1.tgz","hashes":{"sha1":"34624e51e8c3e793226b2994710c201210fdc837","sha512_sri":"sha512-UrDspqXqjAaOCezrs2GpF5pyFZkQbFSmdGZrY8KxXuCbKXxqYQp3YuLIe2WoRMyRXLawdZxOrYSeqzjsskWa3Q=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/dolyame-ui-postcsscustomproperties/v/35.8.1"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-017027","import_time":"2026-08-07T12:51:22.803352914Z","modified_time":"2026-08-07T12:33:09Z","sha256":"a8be08d3eb5601ca7f7b5f74c34e3fd0ebba91f0b72dea8ab4b0642bb9695c0c","source":"amazon-inspector","versions":["35.8.1"]}]}}