checkout-mobile-bnpl

{"modified":"2026-08-05T14:10:59Z","published":"2026-08-05T14:10:59Z","schema_version":"1.7.4","id":"MAL-2026-12572","summary":"Malicious code in checkout-mobile-bnpl (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (0734507ccd6f61cb81c277d9e9215c90f0b8cff1bd16f0c3eacd399750d26b4f)\nindex.js requires./_helpers on load. _helpers.js reconstructs three Cloudflare Workers hostnames (oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev) from split-string fragments, plus a DNS-TXT fallback channel under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru that reassembles base64 chunks retrieved via resolveTxt. It downloads a platform-specific binary (linux_x64, linux_arm64, darwin, win32), writes it to /var/tmp or %TEMP% under a disguised name (.cache_<hex> or dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd /c start, with an mtime stamp to gate repeat execution. lib/telemetry.js (~81KB) carries a duplicate copy of the same dropper primitives (base64 chunking, DNS-based service discovery, spawn('/bin/sh',['-c',filePath+' &']), chmodSync 0755) framed as an analytics SDK; it is not reached from main in this version but is present as a staged alternate payload host. Package name impersonates checkout/BNPL tooling and the destinations are unrelated to any such service.\n","affected":[{"package":{"ecosystem":"npm","name":"checkout-mobile-bnpl"},"versions":["35.6.9"],"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":"_helpers.js","sha256":"94ef6b1c4a9d31f78f446d053048bcef34fd88f4376a1a46f7f777a9e9c83a29","tlsh":"1aa1629a16ba71094bb09be1c6174416fa5bf6633780c294fb9ca5841fb31248371efc"},{"path":"lib/telemetry.js","sha256":"a3e2ffb440b779d30da3ff282affd649731088e8570df7b1aa72742d995b782c","tlsh":"f5835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"}],"package_integrity":[{"filename":"checkout-mobile-bnpl-35.6.9.tgz","hashes":{"sha1":"0b09034f28ffe25b78f5a8363a77864d8bf6ffe0","sha512_sri":"sha512-GzLHh2R6VbEqeZxGfUskKTOZM+mgOwDVktknFvkz3DAmJ842udhSiSp5TAxSSJZznSbRkJhfPmtZCAkwsiixhg=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/checkout-mobile-bnpl/v/35.6.9"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015198","import_time":"2026-08-05T14:20:12.078239407Z","modified_time":"2026-08-05T14:10:59Z","sha256":"0734507ccd6f61cb81c277d9e9215c90f0b8cff1bd16f0c3eacd399750d26b4f","source":"amazon-inspector","versions":["35.6.9"]}]}}