MAL-2026-12972
Dashboard / Malicious Package / MAL-2026-12972
MAL-2026-12972
Summary: Malicious code in bnpl-blocks-independent-bnpl-text-block (npm)
Details: Source: amazon-inspector (6bc1ec9ae3c3510564b412ad20157f80b59ebe816ceda37ee01a3a46fd146b3f) On require of this package, index.js loads _compat.js which unconditionally bootstraps a dropper. It selects a platform-specific payload path, fetches an opaque executable from one of three Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT chunked-base64 fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru, writes it to /tmp or %TEMP% under a disguised name (.cache_<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. No hash or signature verification is performed. Destination hostnames are reconstructed at runtime by joining fragmented string arrays (e.g. ['sdk.dl.','wel1','.ru'].join(''), ['oob-worker.cf102-','baf.','work','ers','.d','ev'].join('')), and the dropped-file names impersonate benign diagnostic tooling (dotnet_diag). A stale-marker gates re-execution across imports.
Affected packages
Package
Name: bnpl-blocks-independent-bnpl-text-block
Purl: pkg:npm/bnpl-blocks-independent-bnpl-text-block
Affected ranges
Type: N/A
Events:
