statist-browser-typed-client-sme.platform.web.teasers@20.4.6

Analysis

On require(), the package executes _init.js which fingerprints the host OS and architecture, then downloads a platform-specific binary payload from one of three Cloudflare Workers C2 endpoints (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) via HTTPS GET /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe depending on platform). If HTTPS fails, it falls back to retrieving the binary via DNS TXT record queries to c[.]tin[.]dl[.]well1[.]site. The downloaded binary is written to /tmp/.cache_<hex> (Linux/macOS) or %TEMP%\dotnet_diag_<hex>.exe (Windows) and spawned as a detached background process that outlives the parent — via cmd.exe /c start /b on Windows or /bin/sh -c "path &" on Unix. The package also ships a large decoy telemetry SDK (lib/telemetry.js) with no real transport configuration, serving only as cover.