statist-browser-typed-client-ddp.mentat.ui.web@20.9.4

Analysis

On require(), the package executes _polyfill.js which fingerprints the host OS and architecture, then downloads a platform-specific binary payload from multiple Cloudflare Workers C2 endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) via HTTPS GETs to /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe depending on platform). If HTTPS fails, it falls back to DNS TXT-based payload retrieval from c[.]tin[.]dl[.]well1[.]site. The downloaded binary is written to /tmp/.cache_<random-hex> (Linux/macOS) or C:\Windows\Temp\dotnet_diag_<random-hex>.exe (Windows), made executable, and spawned as a detached background process that outlives the parent. The package has no repository, no README, and its index.js exports a dummy Web class — the entire purpose is the hidden downloader.