{"id":"MAL-2026-13660","summary":"Malicious code in sme-rko-finance-front-payments-domain (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (d8fcad12c3078bf2134f5e3cafd7ffa0ecf9f2bfec919533881d5c65b738b9fa)\nOn require() of the package, index.js loads./_polyfill.js which assembles a set of C2 hostnames from split string fragments via.join('') — resolving to 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 base64 fallback via sdk.dl.wel1.ru. _polyfill.js downloads an OS-specific binary via https.get, writes it under /tmp or %TEMP% with a disguised name (e.g..cache_\u003chex\u003e or dotnet_diag_\u003chex\u003e.exe), chmods it 0755, and spawns it detached via spawn('/bin/sh', ['-c', path+' &']) or spawn('cmd',...). No pinning, no hash/signature verification, hostnames concealed by fragment concatenation. Package name mimics an internal-looking scoped/branded name for a finance/payments domain.\n","modified":"2026-08-08T01:04:53.776699729Z","published":"2026-08-08T00:47:18Z","database_specific":{"malicious-packages-origins":[{"modified_time":"2026-08-08T00:47:18Z","sha256":"d8fcad12c3078bf2134f5e3cafd7ffa0ecf9f2bfec919533881d5c65b738b9fa","source":"amazon-inspector","versions":["35.8.1"],"id":"IN-MAL-2026-017165","import_time":"2026-08-08T00:53:08.08444841Z"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/sme-rko-finance-front-payments-domain/v/35.8.1"}],"affected":[{"package":{"name":"sme-rko-finance-front-payments-domain","ecosystem":"npm","purl":"pkg:npm/sme-rko-finance-front-payments-domain"},"versions":["35.8.1"],"database_specific":{"indicators":{"evidence_files":[{"sha256":"893b2becb9d35b90d2732caf31f2af165b59864c93cb3ecad9790afa1329a3f5","tlsh":"fea1a55a16fb20080792e1d4851f641671daf5537285e894fb8caa984fda239c3f3afc","path":"_polyfill.js"}],"package_integrity":[{"filename":"sme-rko-finance-front-payments-domain-35.8.1.tgz","hashes":{"sha1":"3c69186536576c688980b11a36a3bb27c421c112","sha512_sri":"sha512-r24oSh03jph25w9jZ/Iz/vaqViqx51+XgAtwQSOyyQwq3YxrNhH0lvCyZfXerLeGpCsYJKrH+VZqMAdYVKuz0Q=="}}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/sme-rko-finance-front-payments-domain/MAL-2026-13660.json","cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}]}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}