{"id":"MAL-2026-13152","summary":"Malicious code in dolyame-ui-dropdown (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (78e2cf3af799e05f20494aba04b5d85aa1335bce541af4cb13aa715a2cda6ea5)\nOn require('dolyame-ui-dropdown'), index.js loads _helpers.js which selects a platform-specific endpoint from an obfuscated (split-literal) host list including oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev, and oob-worker.cf100-416.workers.dev, with a DNS-TXT chunked fallback that assembles a base64 payload from c.\u003cdomain\u003e and numbered n.\u003cdomain\u003e TXT records under dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The downloaded binary is written to /var/tmp or %TEMP% under cover-story names such as.cache_\u003chex\u003e or dotnet_diag_\u003chex\u003e.exe, chmodded to 0755, and spawned detached via cp.spawn('/bin/sh', ['-c', fp+' &']).unref(). Obfuscation includes string-splitting of the child_process require ('child_' + 'process'), array-join reassembly of destination hostnames, and reflective property access such as fs['chmod'+'Sync']. A second dropper stage with the same primitives is shipped in lib/telemetry.js. A package advertised as a UI dropdown has no legitimate reason to fetch and execute platform-specific ELF/Mach-O/EXE payloads at import time.\n","modified":"2026-08-05T15:52:48.394320657Z","published":"2026-08-05T15:14:16Z","database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015619","import_time":"2026-08-05T15:20:00.448977981Z","modified_time":"2026-08-05T15:14:16Z","sha256":"78e2cf3af799e05f20494aba04b5d85aa1335bce541af4cb13aa715a2cda6ea5","source":"amazon-inspector","versions":["35.6.2"]}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/dolyame-ui-dropdown/v/35.6.2"}],"affected":[{"package":{"name":"dolyame-ui-dropdown","ecosystem":"npm","purl":"pkg:npm/dolyame-ui-dropdown"},"versions":["35.6.2"],"database_specific":{"cwes":[{"name":"Embedded Malicious Code","cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature."}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-ui-dropdown/MAL-2026-13152.json","indicators":{"evidence_files":[{"sha256":"ce7c8621fabf5e3115d80789471e8b7be654a9243ee2d1d0548990931fa3363a","tlsh":"e5a1a69a166a30184bb0d7e4c717441af65bf2633780d181fb9c65941fb613483b1efc","path":"_helpers.js"},{"sha256":"dfd02aa0f18f07798ea5d3e06af39bcbb0d05e2611a18b2a4b58017436898ae0","tlsh":"63835055566a242186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc","path":"lib/telemetry.js"}],"package_integrity":[{"hashes":{"sha1":"3d77e198e1fbc28664e29bd6fbf37357c788656a","sha512_sri":"sha512-anmqlA3fIjaqT/lUIKvXFCjLEI9m8xZflxAuezHIpF8QTGESe4U3VMoaL9nxbBjobmOXE4MBUdOHvBskNf0SWg=="},"filename":"dolyame-ui-dropdown-35.6.2.tgz"}]}}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}