eacq-cdk@35.8.1

Analysis

eacq-cdk@35.8.1 is a multi-stage dropper. On require, index.js loads _init.js, which fingerprints the host OS/architecture and downloads a second-stage binary over HTTPS from Cloudflare Workers endpoints (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe. If those fail, it reconstructs the payload from DNS TXT records under c[.]sdk[.]dl[.]wel1[.]ru (and sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, net[.]dl[.]wel1[.]ru). The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe on Windows), made executable, and launched detached via /bin/sh -c "<path> &" or cmd.exe /c start /b. A marker file (.analytics_state) suppresses re-download for ~6 hours. The bundled lib/telemetry.js is a decoy analytics facade; the real behaviour is remote binary download-and-execute at install/require time.