{"id":"MAL-2026-13552","summary":"Malicious code in dolyame-boxy-independent-bnpl-main-title (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154)\nOn require, index.js loads _polyfill.js which reconstructs hostnames from split string fragments (e.g., 'oob-worker.cf99-9b3.wor'+'ke'+'rs.dev') to reach multiple Cloudflare Workers subdomains, downloads an opaque platform-specific binary, writes it to /tmp/.cache_\u003chex\u003e on Unix or %TEMP%\\dotnet_diag_\u003chex\u003e.exe on Windows, chmods 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored. A DNS TXT chunked-transfer fallback under *.dl.wel1.ru reassembles a base64 payload when HTTPS is blocked. Cover-story naming — file _polyfill.js, cache marker analytics_state, Windows payload dotnet_diag_\u003chex\u003e.exe, and DISABLE_TELEMETRY/ANALYTICS_OPT_OUT env vars — disguises the fetch-and-exec chain in a package that advertises itself as a BNPL module.\n","modified":"2026-08-07T13:20:21.835171658Z","published":"2026-08-07T12:35:26Z","database_specific":{"malicious-packages-origins":[{"source":"amazon-inspector","versions":["35.5.6"],"id":"IN-MAL-2026-017042","import_time":"2026-08-07T12:51:23.496743268Z","modified_time":"2026-08-07T12:35:26Z","sha256":"7fd169fe81bc68427ce8c3b472cb376e6d3fdad489d07595a8c8f08f894ac154"}]},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/dolyame-boxy-independent-bnpl-main-title/v/35.5.6"}],"affected":[{"package":{"name":"dolyame-boxy-independent-bnpl-main-title","ecosystem":"npm","purl":"pkg:npm/dolyame-boxy-independent-bnpl-main-title"},"versions":["35.5.6"],"database_specific":{"cwes":[{"description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code","cweId":"CWE-506"}],"indicators":{"evidence_files":[{"path":"_polyfill.js","sha256":"f64ebd3a72d723d57e2e95b9d56656afcba9dd21316cc03a4ba64c9045269827","tlsh":"d5a1c79a02a970188bb0dbe5c7175416f65bf6633280c6d4f76ca9941fb612483b2efc"}],"package_integrity":[{"hashes":{"sha1":"9c691e92d1d367399846c1d7a484f8e729d3e624","sha512_sri":"sha512-TpodgaeQ1JIybMlZlj+34JOltY+GbYQJpLFNNOksIxxv8HxAkULUD6MMawxl3dC2x8LMYn8Mzw3bJ5YSZyhqhg=="},"filename":"dolyame-boxy-independent-bnpl-main-title-35.5.6.tgz"}]},"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/dolyame-boxy-independent-bnpl-main-title/MAL-2026-13552.json"}}],"schema_version":"1.8.0","credits":[{"name":"Amazon Inspector","contact":["inspector-research@amazon.com"],"type":"FINDER"}]}