{"id":"MAL-2026-13569","summary":"Malicious code in dolyame-ui-flatcorners (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (9ae65f4eadd80905a644647c6f15aee082d428bf5812632a29015eccc924bf1b)\nOn require()/import of the package, both _adapter.js and the advertised main module lib/telemetry.js download an OS-specific binary from obfuscated third-party endpoints (Cloudflare Workers subdomains oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, with a DNS-TXT chunked fallback via sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), write it to /var/tmp/.cache_\u003chex\u003e or %TEMP%\\dotnet_diag_\u003chex\u003e.exe, mark it executable via fs['chmod'+'Sync'](path, 0o755), and spawn it detached via cp.spawn('/bin/sh', ['-c', filePath + ' &'], {detached:true, stdio:'ignore'}) or cmd equivalent. Hostnames, filesystem API names, and the child_process require string are reassembled at runtime through string concatenation and.join('') to evade static detection. The dropper is duplicated across _adapter.js and lib/telemetry.js so execution occurs even if one path fails. The fetched payload is opaque, unpinned, unverified, and unrelated to the package's stated purpose (Common TypeScript definitions).\n","modified":"2026-08-07T13:20:37.034158266Z","published":"2026-08-07T12:29:35Z","database_specific":{"malicious-packages-origins":[{"import_time":"2026-08-07T12:51:21.7689742Z","modified_time":"2026-08-07T12:29:35Z","sha256":"9ae65f4eadd80905a644647c6f15aee082d428bf5812632a29015eccc924bf1b","source":"amazon-inspector","versions":["35.8.1"],"id":"IN-MAL-2026-017003"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/dolyame-ui-flatcorners/v/35.8.1"}],"affected":[{"package":{"name":"dolyame-ui-flatcorners","ecosystem":"npm","purl":"pkg:npm/dolyame-ui-flatcorners"},"versions":["35.8.1"],"database_specific":{"indicators":{"package_integrity":[{"hashes":{"sha512_sri":"sha512-wdNHasd6Y1pdWsugJBJWwONqj5Wy3qa1eEqMLDZ/vw3QYqVzViQauYXUkk/Ou3BxtKG7q8HG484kv/jBZ8ftSg==","sha1":"08db62b93eb7d07d191e29d38f60a7e0a97fe3e7"},"filename":"dolyame-ui-flatcorners-35.8.1.tgz"}],"evidence_files":[{"tlsh":"5ea1b65a16fb30280693f1d4891f8816719af64337c4e9c4fb4c66548fea52883b39fc","path":"_adapter.js","sha256":"6eeb87029df11bc3956f9a361bb918326cb295a17db8f902073b5083e1574601"},{"path":"lib/telemetry.js","sha256":"34c10b27eafcca6f083e88710afcb594ecd89a6be09fef38918957921eace9ee","tlsh":"4573304966fb10214263b0685ebb40437635c4072a4eed5dba9c43ec9f8db3896f1fb9"}]},"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-flatcorners/MAL-2026-13569.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}