MAL-2026-12045

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## Source: amazon-inspector (c4cbfd025a99e15c1b81ff3a4bab4b52e4575f00b5328fe210fd8fb3fe9df9f8) On require of the package's main entry (index.js), _polyfill.js downloads a platform-specific binary from one of several hosts whose names are reconstructed at runtime by joining string fragments (resolving to oob-worker.cf102-baf.workers.dev and similar Cloudflare Workers subdomains), with a DNS TXT-record fallback resolving to *.dl.well1.site. The fetched bytes are written to /var/tmp/.cache_<rand> on Unix or %TEMP%\dotnet_diag_<rand>.exe on Windows, chmod 0755'd, and spawned detached via /bin/sh -c or cmd /c start. Host and API names (child_process, chmodSync) are split across array literals and reassembled at runtime to evade static analysis. A sibling file lib/telemetry.js, labeled as an Analytics SDK, ships the same dropper primitives (detached shell spawn of a written file, chmod 0755, base64 chunk assembly, DNS-based service discovery) as an alternate loader. The package advertises itself as an event-emitter client, and the fetched binaries have disguised names (cache file, dotnet_diag) unrelated to that stated purpose. The result is arbitrary remote code execution on any machine that installs or imports this package.