bigops-watermark@35.9.5

Analysis

On require, the package loads a bundled dropper (_support.js) that fingerprints the OS/architecture and downloads a second-stage binary over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, and oob-worker[.]cf102-baf[.]workers[.]dev at path /pkg/package (platform-specific: /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If the HTTP fetch fails it falls back to a DNS-TXT exfil channel via sdk[.]dl[.]wel1[.]ru / ext[.]dl[.]wel1[.]ru / pkg[.]dl[.]wel1[.]ru / net[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<hex> (dotnet_diag_<hex>.exe on Windows), made executable, and launched detached via /bin/sh -c "<path> &" or cmd.exe /c start /b, so it runs in the background and outlives the parent process.