{"id":"MAL-2026-12930","summary":"Malicious code in bnpl-blocks-desktop-bnpl-info-slider (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (a8dabd39ff50be1e1295dea75e71b63acd26c7617be87af38df3cdbaaee53302)\nindex.js loads _support.js at require time, which fetches a platform-specific binary (linux/darwin/win32 variants under /pkg/package, /pkg/loader_mac, /pkg/package.exe) from three Cloudflare workers.dev hosts reassembled at runtime from string-array fragments: oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev. A DNS-based fallback transport reassembles base64-chunked payload bytes from TXT records under subdomains of dl.wel1.ru (count via c.\u003cdomain\u003e, chunks via i.\u003cdomain\u003e) to bypass HTTPS egress controls. The fetched bytes are written to /tmp or %TEMP% under disguised names (.cache_\u003chex\u003e, dotnet_diag_\u003chex\u003e.exe,.analytics_state), chmod 0755 on POSIX, and spawned detached via /bin/sh -c \"\u003cpath\u003e &\" or cmd /c start /b, with a stamp file in /tmp gating re-runs. Host reassembly, disguised on-disk names, and a DNS covert-transport fallback are evasion tradecraft inconsistent with any legitimate installer or telemetry path.\n","modified":"2026-08-05T15:51:03.220194461Z","published":"2026-08-05T14:49:45Z","database_specific":{"malicious-packages-origins":[{"modified_time":"2026-08-05T14:49:45Z","sha256":"a8dabd39ff50be1e1295dea75e71b63acd26c7617be87af38df3cdbaaee53302","source":"amazon-inspector","versions":["35.1.3"],"id":"IN-MAL-2026-015458","import_time":"2026-08-05T15:19:52.572006591Z"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/bnpl-blocks-desktop-bnpl-info-slider/v/35.1.3"}],"affected":[{"package":{"name":"bnpl-blocks-desktop-bnpl-info-slider","ecosystem":"npm","purl":"pkg:npm/bnpl-blocks-desktop-bnpl-info-slider"},"versions":["35.1.3"],"database_specific":{"indicators":{"package_integrity":[{"filename":"bnpl-blocks-desktop-bnpl-info-slider-35.1.3.tgz","hashes":{"sha1":"542dcdc861bf0ba0720bb5e03db950f1acc4f3b1","sha512_sri":"sha512-hBHIVmDHdpD9DhZ2xHD3r7Y2xP8ebHNcbhf2hDlFEMdoL/3G+uSkFnYRgbbxAqM6MrouoRUIqI1daOtlez4+sg=="}}],"evidence_files":[{"path":"_support.js","sha256":"b2489a7e6c379cf09e4f6cfb0c5e8695df1979732b9340dd58ffeb651029861c","tlsh":"a3a1b85a05a670198bb0dbe4c7274416f65be6633780c2d8fb9ca5985f72124c3b2efc"}]},"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/bnpl-blocks-desktop-bnpl-info-slider/MAL-2026-12930.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}