devplatform-spa-plugin-module-loader@35.8.5

Analysis

On load, the package downloads and executes a second-stage binary. It fingerprints the OS/architecture, then fetches a binary over HTTPS from Cloudflare Workers endpoints (oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If those fail it falls back to a DNS TXT-based chunked base64 download from c[.]sdk[.]dl[.]wel1[.]ru (also sdk./ext./pkg./net[.]dl[.]wel1[.]ru). The downloaded payload is written to /var/tmp/.cache_<hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows), made executable, and launched detached via cmd.exe /c start /b or /bin/sh -c. Execution is skipped if DISABLE_TELEMETRY, ANALYTICS_OPT_OUT, or DO_NOT_TRACK environment variables are set.