bnpl-blocks-mobile-bnpl-tab-buttons

{"modified":"2026-08-05T14:37:33Z","published":"2026-08-05T14:37:33Z","schema_version":"1.7.4","id":"MAL-2026-13007","summary":"Malicious code in bnpl-blocks-mobile-bnpl-tab-buttons (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (34cc219a990162733e49aafc255a8abe4c4acd3fc56bce77ae31800fd4791678)\nOn require() of the package, index.js side-loads _adapter.js which selects a platform-specific asset, downloads bytes over HTTPS from hostnames reconstructed at runtime by joining split string fragments (oob-worker.cf10{0..3}-*.workers.dev), writes the bytes to a disguised temp file (/tmp/.cache_<hex> on POSIX, %TEMP%/dotnet_diag_<hex>.exe on Windows), sets mode 0o755, and spawns the file detached via /bin/sh -c or cmd.exe /c start. A DNS-TXT fallback channel queries c.<domain> then N.<domain> records under *.dl.wel1.ru, base64-decodes the concatenated chunks, and executes the resulting binary when the HTTPS mirrors fail. The package advertises itself as a native bridge with a trivial no-op class in index.js; the dropper logic is hidden in _adapter.js with cover-story variable names (analytics_state, telemetry). Hostname reconstruction from split literals is a deliberate static-scanner evasion technique, and DNS-TXT payload staging is a covert-channel technique to bypass HTTPS egress filtering.\n","affected":[{"package":{"ecosystem":"npm","name":"bnpl-blocks-mobile-bnpl-tab-buttons"},"versions":["35.7.1"],"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":"bf7162ff71962781fee86f486dbf693d84acafd7be42301783907ad6d4bfc16b","tlsh":"98a1885a0595b0084bb0e7e4c61b8825f56af6633681c2d4f75c69885f73524c3b2dfc"}],"package_integrity":[{"filename":"bnpl-blocks-mobile-bnpl-tab-buttons-35.7.1.tgz","hashes":{"sha1":"4ce4fa38729bdc8b270930c80d1158df555550fa","sha512_sri":"sha512-kFevNY+pDhK81K8qdv/QTKHvv9ANO9Hl8zvT4edbeksuhWimkRHSEhnyerny7jL7oUhrcWQwtfDdpzMDHxMk6Q=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/bnpl-blocks-mobile-bnpl-tab-buttons/v/35.7.1"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015375","import_time":"2026-08-05T15:19:47.998503964Z","modified_time":"2026-08-05T14:37:33Z","sha256":"34cc219a990162733e49aafc255a8abe4c4acd3fc56bce77ae31800fd4791678","source":"amazon-inspector","versions":["35.7.1"]}]}}