bigops-ui-kit@35.9.2

Analysis

On require, the package (a UI-kit facade) loads a bundled _compat.js dropper. It fingerprints the host platform/arch and downloads a platform-specific binary over HTTPS from three Cloudflare Workers hosts (oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe, with a DNS-TXT fallback resolver under wel1[.]ru (c[.]sdk[.]dl[.]wel1[.]ru). The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under the Windows temp dir) and executed detached via /bin/sh -c or cmd.exe /c start /b, so it runs in the background after install/require. A stamp file (/tmp/.analytics_state) throttles re-execution.