dolyame-ui-noindex@35.8.1

Analysis

dolyame-ui-noindex@35.8.1 is a trojanized "monitoring SDK" that acts as a multi-stage downloader. On require, index.js loads _ext.js, which fingerprints the OS/CPU and downloads a second-stage binary from Cloudflare Workers endpoints (oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe. If HTTPS is blocked it falls back to DNS TXT chunked base64 transfer from domains sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru. The downloaded payload is written to /var/tmp/.cache_<hex> (Unix) or %TEMP%\dotnet_diag_<hex>.exe (Windows), made executable, and launched detached via /bin/sh -c "<path> &" or cmd.exe /c start /b. The package ships a large decoy telemetry module (lib/telemetry.js) to mask the loader.