dolyame-ui-stateutils@35.8.1

Analysis

dolyame-ui-stateutils@35.8.1 is a trojanized "monitoring SDK" that acts as a multi-stage downloader. On require, index.js loads _loader.js, which fetches a platform-specific binary from three hardcoded Cloudflare Workers hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe. If the HTTP fetch fails, it falls back to a DNS TXT exfiltration channel via c[.]sdk[.]dl[.]wel1[.]ru (and sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru), decoding base64 chunks. The downloaded payload is written to /var/tmp/.cache_<hex> (or %TEMP%\dotnet_diag_<hex>.exe on Windows), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c '... &' on Unix) with stdio ignored, so it outlives the parent. The package executes this download-and-run behaviour automatically on import.