{"id":"MAL-2026-12963","summary":"Malicious code in bnpl-blocks-independent-bnpl-open-api (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (10c2ca153491f56216bdb6e7d85fcaa5ce9fc15c7cb412b4291f1657c387c9d0)\nOn require() of bnpl-blocks-independent-bnpl-open-api, index.js loads _support.js which unconditionally executes at module load. _support.js selects a per-OS URL, downloads a binary over HTTPS from hardcoded Cloudflare Workers hosts (oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev), writes the payload to a hidden file in a temp directory using cover-story names such as.cache_\u003cuid\u003e,.analytics_state, and dotnet_diag_, chmods it 0755 on Unix, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. No hash or signature verification is performed. Hostnames are assembled at runtime by joining split string fragments (e.g. [\"oob-worker.cf101-adf.workers\",\".dev\"].join(\"\")) to defeat plain-text scanning, and child_process is loaded via require(\"child_\" + \"process\") in lib/telemetry.js. A DNS-TXT base64 fallback channel is provided using resolvers sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.we1.ru. The download destinations and payload are unrelated to the package's stated purpose as a BNPL open API SDK.\n","modified":"2026-08-05T15:51:18.583238970Z","published":"2026-08-05T14:43:36Z","database_specific":{"malicious-packages-origins":[{"import_time":"2026-08-05T15:19:50.200248116Z","modified_time":"2026-08-05T14:43:36Z","sha256":"10c2ca153491f56216bdb6e7d85fcaa5ce9fc15c7cb412b4291f1657c387c9d0","source":"amazon-inspector","versions":["35.1.2"],"id":"IN-MAL-2026-015416"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/bnpl-blocks-independent-bnpl-open-api/v/35.1.2"}],"affected":[{"package":{"name":"bnpl-blocks-independent-bnpl-open-api","ecosystem":"npm","purl":"pkg:npm/bnpl-blocks-independent-bnpl-open-api"},"versions":["35.1.2"],"database_specific":{"indicators":{"evidence_files":[{"path":"_support.js","sha256":"9de32dbcf42b358833981a8526fe9f437bcd299a42a0675067f8b557052f94c3","tlsh":"85a1b76a166670188bb1ebf4c6175815f65af6633280d188fb9c65980ff352483b2efc"}],"package_integrity":[{"filename":"bnpl-blocks-independent-bnpl-open-api-35.1.2.tgz","hashes":{"sha512_sri":"sha512-MEnelFxFomAL447J5fnZPH4G0RK9fz0hv5g1+IK9TjL/Y9TeB11HHfpwqSamWhMwwHq0EBTY9X+JhCL3GTsTug==","sha1":"cd60b39572f149d18ac89b2f132e6ea6ae3a09bb"}}]},"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-independent-bnpl-open-api/MAL-2026-12963.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}