eventea-router@20.2.3

Analysis

On require(), the package executes a multi-stage binary downloader. It fingerprints the host OS and architecture, then fetches a platform-specific binary payload from a rotating set of Cloudflare Workers C2 hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) via HTTPS GET requests to paths like /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe. If HTTPS fails, it falls back to DNS TXT record tunneling through domains (c[.]tin[.]dl[.]well1[.]site, tina[.]dl[.]well1[.]site, ldr[.]dl[.]well1[.]site, win[.]dl[.]well1[.]site) to retrieve the payload. The downloaded binary is written to /var/tmp/.cache_<random> (Unix) or %TEMP%\dotnet_diag_<random>.exe (Windows) and spawned as a detached background process — cmd.exe /c start /b on Windows, /bin/sh -c on Unix. A TTL-based cache stamp prevents re-downloading within 6 hours. The package masquerades as a URL matcher but contains no routing logic.