taiga-ui-proprietary-navigation@20.1.2

Analysis

This package combosquats the legitimate @taiga-ui/* Angular component library. On require(), it fingerprints the OS and architecture, then downloads a platform-specific binary payload from a rotating set of Cloudflare Workers C2 hosts (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev) via HTTPS GET to paths such as /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If HTTPS fails, it falls back to DNS TXT queries to c[.]tin[.]dl[.]well1[.]site to reconstruct a base64-encoded binary. The downloaded binary is written to /var/tmp/.cache_<random> (Linux/macOS) or %TEMP%\dotnet_diag_<random>.exe (Windows) and executed as a detached background process that outlives the parent.