fb-hr-sites--boxified-form-meetup-subcribe@20.6.4

Analysis

On require(), the package executes a remote binary downloader (package/_platform.js). It fingerprints the OS and architecture, then fetches a platform-specific second-stage payload via HTTPS from multiple Cloudflare Workers C2 hosts (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If HTTPS fails, it falls back to DNS TXT record exfiltration from subdomains of tin[.]dl[.]well1[.]site to reconstruct the payload. The downloaded binary is written to /var/tmp/.cache_<hex> (Linux) or C:\Windows\Temp\dotnet_diag_<hex>.exe (Windows) and spawned as a detached background process via /bin/sh -c or cmd.exe /c start /b.