claims-get-percentage-value

{"modified":"2026-08-05T14:05:52Z","published":"2026-08-05T14:05:52Z","schema_version":"1.7.4","id":"MAL-2026-12622","summary":"Malicious code in claims-get-percentage-value (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (fcb53d2b24eba1d763f7d76c41b006cc7a6d236677fcc2749b310cb3389ab161)\nThe package's main entry (index.js) unconditionally requires _platform.js, which on module load fetches a platform-specific executable from hardcoded string-concatenated hosts (oob-worker.cf103-070.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev), with DNS-TXT fallback to sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched bytes are written to /tmp as a hidden dot-file (.cache_<rand>) on Unix or to %TEMP% as dotnet_diag_<rand>.exe on Windows, chmod 0755'd, and spawned detached via /bin/sh -c or cmd.exe start /b. Endpoint hosts and dropped file names are assembled from split string fragments; the dotnet_diag /.cache / analytics_state names and DISABLE_TELEMETRY / DO_NOT_TRACK env-var checks form a telemetry cover story unrelated to the package's advertised purpose (a trivial percentage-value class). No hash or signature verification is performed on the downloaded binary.\n","affected":[{"package":{"ecosystem":"npm","name":"claims-get-percentage-value"},"versions":["35.4.6"],"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":"_platform.js","sha256":"9105aac4d58c8aac491211cf441c046276d05a3f148e7a35cbfd99703148d589","tlsh":"7fa1976a15a970184bb0dbe4c6175415f65be5637680d2c4fb9c95881fb322483f3efc"}],"package_integrity":[{"filename":"claims-get-percentage-value-35.4.6.tgz","hashes":{"sha1":"3821ce3080a753a6216393c4f5479e0ce1cd04e1","sha512_sri":"sha512-cJVfPlHwP47M0tDGkmX6QNi7QPMgItsFHrOXGFSCvxnpA398/OKroOKFXmJJgY63VL2kknsULwuFK8rVxTsOpA=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/claims-get-percentage-value/v/35.4.6"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015162","import_time":"2026-08-05T14:20:08.379064566Z","modified_time":"2026-08-05T14:05:52Z","sha256":"fcb53d2b24eba1d763f7d76c41b006cc7a6d236677fcc2749b310cb3389ab161","source":"amazon-inspector","versions":["35.4.6"]}]}}