{"id":"MAL-2026-13134","summary":"Malicious code in dolyame-ui-action (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (f91017d9e387f2441738f4ffe07ce8807a3af9385f2c506cf165fa851d011f53)\nOn require('dolyame-ui-action'), index.js loads _support.js which downloads a platform-specific binary over HTTPS from Cloudflare Workers hosts whose names are reconstructed at runtime from split string arrays (e.g. joined fragments producing 'oob-worker.cf'-style workers.dev hosts), with a DNS TXT base64 fallback under *.dl.wel1.ru. The fetched bytes are written to /var/tmp or the Windows TEMP directory under disguised names (.cache_\u003chex\u003e, dotnet_diag_\u003chex\u003e.exe), chmod'd to 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp + ' &'], {detached:true}) or the Windows cmd equivalent. _support.js is loaded from index.js via a silent try { require('./_support'); } catch(_) {} wrapper. lib/telemetry.js (81KB, labeled 'Analytics SDK') bundles parallel dropper primitives — base64 buffer decode, a masked fs['chmod'+'Sync'] to 0755, and cp.spawn('/bin/sh', ['-c', filePath + ' &'], {detached:true}) — providing an alternate execution path in the same tarball. The destination hostnames are obfuscated by fragment-join reconstruction, the loader is wrapped in a swallow-all try/catch, and the delivered binary is opaque and unpinned.\n","modified":"2026-08-05T15:52:39.165995103Z","published":"2026-08-05T15:17:32Z","database_specific":{"malicious-packages-origins":[{"modified_time":"2026-08-05T15:17:32Z","sha256":"f91017d9e387f2441738f4ffe07ce8807a3af9385f2c506cf165fa851d011f53","source":"amazon-inspector","versions":["35.6.3"],"id":"IN-MAL-2026-015640","import_time":"2026-08-05T15:20:01.266483734Z"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/dolyame-ui-action/v/35.6.3"}],"affected":[{"package":{"name":"dolyame-ui-action","ecosystem":"npm","purl":"pkg:npm/dolyame-ui-action"},"versions":["35.6.3"],"database_specific":{"cwes":[{"name":"Embedded Malicious Code","cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature."}],"indicators":{"evidence_files":[{"tlsh":"9ab1879a126670194bb0e7e4c71b9816f55af6633780c2d4f75c99884fb35248372dfc","path":"_support.js","sha256":"c322c09db18bbe3996de4ada4ed5755886f8b2721cd01eaf72a659ca6f333c76"},{"sha256":"2ad34fe1d999ecf8d8894a403d128d5941e6828e9fe2e2c9e8007f1c4a51de9e","tlsh":"5c835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc","path":"lib/telemetry.js"}],"package_integrity":[{"hashes":{"sha1":"ceaedb341f0c71380e786d6749d9d085a0aa3b10","sha512_sri":"sha512-6oHH430LnEHGMGPi7HyJVDfJetZDx3KOV9T1JRcNQVcSxBX5KDCMcSf9FCxeFnY0YmfYz35YzWbk7Xxr5hSa4g=="},"filename":"dolyame-ui-action-35.6.3.tgz"}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-action/MAL-2026-13134.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}