claims-claims-api-adapters

{"modified":"2026-08-05T14:06:59Z","published":"2026-08-05T14:06:59Z","schema_version":"1.7.4","id":"MAL-2026-12610","summary":"Malicious code in claims-claims-api-adapters (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (dbf35d865ef56cd2fa5863a636bb33bf43d7afe418e9028c3bb73af13470bf63)\nOn require, index.js loads _loader.js which selects a platform-specific temp path, downloads a binary over HTTPS from anonymous *.workers.dev hosts whose names are reconstructed at runtime by joining split string fragments (e.g. oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), writes the bytes to a stealth filename (dotnet_diag_<rand>.exe on Windows,.cache_<rand> on Linux/macOS), chmods 0755, and spawns it detached via /bin/sh -c or cmd. If HTTPS retrieval fails, the loader falls back to a covert DNS-TXT channel against sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, requesting c.<domain> for a chunk count and <i>.<domain> for up to 2000 base64 chunks, concatenating and base64-decoding the result into the payload buffer that is then written and executed. No hash or signature verification is performed; destination hostnames are obfuscated to evade static inspection.\n","affected":[{"package":{"ecosystem":"npm","name":"claims-claims-api-adapters"},"versions":["35.7.9"],"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":"_loader.js","sha256":"00f1fd8feab7d130438f016193a2648aa501283268f6255a96676bdbe48a6927","tlsh":"fba1745a166970198bb0dbf4c7174415f65be6a33280c2c4f76ca9945fb3224c2b2efc"}],"package_integrity":[{"filename":"claims-claims-api-adapters-35.7.9.tgz","hashes":{"sha1":"eaf62e87553e236c2ae9a9088dfd4e4eb309ecfe","sha512_sri":"sha512-yg+rdQpOpjjBtYviksgZvviDelXjwbRO1KlEtfmXTmx5/Ka6SfZ8NmajYZ5K9Do42AX9Hd52PYAi2C0+GvzxVA=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/claims-claims-api-adapters/v/35.7.9"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015170","import_time":"2026-08-05T14:20:09.252257136Z","modified_time":"2026-08-05T14:06:59Z","sha256":"dbf35d865ef56cd2fa5863a636bb33bf43d7afe418e9028c3bb73af13470bf63","source":"amazon-inspector","versions":["35.7.9"]}]}}