bigops-offers@35.6.8

Analysis

bigops-offers@35.6.8 is a multi-stage dropper. On require, lib/_init.js fingerprints the host platform/arch and downloads a second-stage binary over HTTPS from four Cloudflare Workers endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) at /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe depending on OS. If the HTTPS fetch fails it reconstructs the payload from DNS TXT records under c[.]sdk[.]dl[.]wel1[.]ru (base64 chunks). The fetched binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under TEMP on Windows), chmod 0755, and executed as a detached background process via /bin/sh or cmd.exe /c start /b.