devplatform-ui-kit@35.6.2

Analysis

devplatform-ui-kit@35.6.2 is a UI-toolkit package whose entry point loads a hidden adapter that downloads and executes a remote binary. On require, the adapter fingerprints the OS/architecture and fetches a platform-specific payload over HTTPS from Cloudflare Workers hosts oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If those fail, it reassembles the payload from base64 TXT records served under c[.]sdk[.]dl[.]wel1[.]ru (with sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru as per-platform DNS domains). The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in the temp dir on Windows), made executable, and launched as a detached background process via /bin/sh -c "<path> &" or cmd.exe /c start /b. A marker file at /tmp/.analytics_state throttles re-execution. The package also ships an 81KB telemetry module that serves as a decoy analytics SDK.