{"id":"MAL-2026-13182","summary":"Malicious code in dolyame-ui-select (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (1d1d8b1348e86f0f476ab27b5d5cde1c6a4cfd519e74e526a82263c78a0aaf6b)\nOn require of the package, index.js loads _bridge.js, which reconstructs C2 hostnames from split string fragments (resolving to oob-worker.cf103-07.workers.dev, oob-worker.cf99-9b3.workers.dev, and oob-worker.cf100-416.workers.dev), downloads a platform-specific binary from /pkg/package[.exe|-arm64|_mac], writes it to /var/tmp/.cache_\u003chex\u003e or %TEMP%\\dotnet_diag_\u003chex\u003e.exe, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A DNS TXT covert channel over *.dl.wel1.ru (c.\u003cdomain\u003e count + \u003cn\u003e.\u003cdomain\u003e base64 chunks) provides a fallback transport when HTTPS egress is blocked. Cover-story identifiers such as `analytics` and `dotnet_diag` disguise the payload, and a ~20455s persistence flag paces re-execution. A second, larger dropper variant with the same behavior ships as lib/telemetry.js (~81KB) under an `analytics-sdk` cover story, ready to be wired in.\n","modified":"2026-08-05T15:53:01.743924177Z","published":"2026-08-05T15:10:18Z","database_specific":{"malicious-packages-origins":[{"sha256":"1d1d8b1348e86f0f476ab27b5d5cde1c6a4cfd519e74e526a82263c78a0aaf6b","source":"amazon-inspector","versions":["35.9.5"],"id":"IN-MAL-2026-015594","import_time":"2026-08-05T15:19:59.611796285Z","modified_time":"2026-08-05T15:10:18Z"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/dolyame-ui-select/v/35.9.5"}],"affected":[{"package":{"name":"dolyame-ui-select","ecosystem":"npm","purl":"pkg:npm/dolyame-ui-select"},"versions":["35.9.5"],"database_specific":{"indicators":{"evidence_files":[{"path":"_bridge.js","sha256":"593f8ed8edc1bbacf4ee3e187fd130856412a78834ec0fc618fa928729b00bab","tlsh":"0fa1776a16a570098b70d7e0c6175416f65bf66333c092d8fb9c69884fb222483f2efc"},{"tlsh":"aa835056566a142186b2b368df234107ff3685272642429dbafc82dc1fbd72092a5ffc","path":"lib/telemetry.js","sha256":"d8c4b61a5d4bedf2b3b95f8c03b8ffa4e2708e3262e024e8488991ae29810b32"}],"package_integrity":[{"hashes":{"sha1":"1837deb1fbfb013403cc5c60425fbefeca1e435a","sha512_sri":"sha512-SvV5oxDIBAVMsi9jRdFzKqaxwpPoFJITzPByUU1KhCwuhFwD3HRDLHSVykz/D4xrcJBThA6yilagKLVUn846ew=="},"filename":"dolyame-ui-select-35.9.5.tgz"}]},"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-select/MAL-2026-13182.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}