{"schema_version":"1.8.0","id":"MAL-2026-12625","published":"2026-08-05T14:03:16Z","modified":"2026-08-05T14:35:55.443566106Z","summary":"Malicious code in claims-historical-claims-domain (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (821551bfee1b6a8fa74b001808fad75327d22654f228600f02a6130edc31ce2e)\nOn require, index.js loads _bridge.js which selects a platform-specific URL path and downloads a binary via https.get from hostnames assembled by string-splitting fragments such as 'oob-worker.cf*-*.workers.dev', with a DNS TXT-record base64 fallback under '*.dl.wel1.ru'. The fetched bytes are written to a temp file under a masquerading name (dotnet_diag_<rnd>.exe on Windows,.cache_<rnd> on Unix), chmodded 0755, and spawned detached via /bin/sh -c or cmd. No hash or signature verification is performed. A freshness marker file named 'analytics_state' gates re-runs to roughly once per six hours, and code comments frame the behavior as 'telemetry'/'analytics'. Host destinations and artifact names are obfuscated via array-join string splitting to defeat literal-string scanning.\n","affected":[{"package":{"name":"claims-historical-claims-domain","ecosystem":"npm","purl":"pkg:npm/claims-historical-claims-domain"},"versions":["35.4.4"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"_bridge.js","sha256":"475597cb2dec5ca1de0006f854b86a7c1a7974810d9665b5fb4c9809b49bed0f","tlsh":"96a1965a12a670198bb0d7e48b175416f65be6733380c2d4f79ca5580f7762483b2efc"}],"package_integrity":[{"filename":"claims-historical-claims-domain-35.4.4.tgz","hashes":{"sha1":"c527d1373f5cc7e94fa603228d9478009b42cf2f","sha512_sri":"sha512-TeccRsUuE/zuUbPYa9sf5rTWfgDWAFk0suN2GnZh9zlNM4Xxt29zVtB+JJRleooQJKFq+Fu07zn0xYN66pe+Tw=="}}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/claims-historical-claims-domain/MAL-2026-12625.json"}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/claims-historical-claims-domain/v/35.4.4"}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015145","import_time":"2026-08-05T14:20:06.816974558Z","modified_time":"2026-08-05T14:03:16Z","sha256":"821551bfee1b6a8fa74b001808fad75327d22654f228600f02a6130edc31ce2e","source":"amazon-inspector","versions":["35.4.4"]}]},"credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}