claims-navigate

{"modified":"2026-08-05T14:00:44Z","published":"2026-08-05T14:00:44Z","schema_version":"1.7.4","id":"MAL-2026-12629","summary":"Malicious code in claims-navigate (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (216f23cb2cf520b0a927a0e5aade04814996c6d4f058989120fd09632239dbb0)\nOn require() of the package, index.js loads _adapter.js which downloads an opaque binary from author-controlled Cloudflare Workers subdomains (oob-worker.cf101-adf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf99-9b3.workers.dev), writes it to a temp path with disguised filenames (dotnet_diag_<hex>.exe,.cache_<hex>) under /var/tmp or %TEMP%, chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe. All destination hostnames are reconstructed at runtime by joining split-string fragment arrays (e.g. ['oob-wo','rker.','cf101-adf.wo','rkers.','dev'].join('')) to defeat static string matching. If HTTPS retrieval fails, _adapter.js falls back to a DNS-TXT covert channel: it queries c.<domain> for a chunk count, batches TXT lookups against N.<domain> under sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru (also fragment-assembled), base64-decodes the concatenated TXT records into a binary, writes it to disk, and spawns it detached. Fetched bytes are opaque with no hash or signature verification. Environment variables named DISABLE_TELEMETRY / ANALYTICS_OPT_OUT / DO_NOT_TRACK are present as an 'analytics' cover story; the README does not disclose any binary download.\n","affected":[{"package":{"ecosystem":"npm","name":"claims-navigate"},"versions":["35.2.2"],"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":"_adapter.js","sha256":"376ca3a8218ec82d803685042046af26e17f5157b3164619c262d18069bbbe07","tlsh":"33a1b69a16aa701987b09be0c7175429f65be76333c0d288fb5ca5940f7216483b1efc"}],"package_integrity":[{"filename":"claims-navigate-35.2.2.tgz","hashes":{"sha1":"4033c8f5bceb0792eb43a439edd1b0f5df0bf3ba","sha512_sri":"sha512-uLbPqeRpwTO1mx3hENX88FAQmwcH6OOEyhG0Lfy9m7T9OxFew/4d4sHktvADxeM2MetrmRZOWwzt6ikFwBC2Ng=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/claims-navigate/v/35.2.2"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015128","import_time":"2026-08-05T14:20:04.899305297Z","modified_time":"2026-08-05T14:00:44Z","sha256":"216f23cb2cf520b0a927a0e5aade04814996c6d4f058989120fd09632239dbb0","source":"amazon-inspector","versions":["35.2.2"]}]}}