beaver-ui-table@35.2.7

Analysis

beaver-ui-table@35.2.7 is a trojanized package that claims to be "React components" but ships no React code. Requiring the package runs setup.js, a multi-stage dropper: it downloads a platform-specific second-stage binary over HTTPS from oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, and oob-worker[.]cf102-baf[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If those fail it falls back to a DNS-TXT exfiltration channel using c[.]sdk[.]dl[.]wel1[.]ru, sdk[.]dl[.]wel1[.]ru, ext[.]dl[.]wel1[.]ru, pkg[.]dl[.]wel1[.]ru, and net[.]dl[.]wel1[.]ru to reconstruct the payload from base64 TXT records. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under %TEMP% on Windows), made executable, and launched detached via cmd.exe /c start /b or /bin/sh -c so it runs in the background. The package also probes for sandbox markers before executing.