cardsmobile-collection@20.4.6

Analysis

On require(), the package fingerprints the host OS and architecture, then downloads a platform-specific binary payload from Cloudflare Workers C2 endpoints (oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev) via HTTPS GET requests to paths like /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If HTTPS fails, it falls back to retrieving the binary via DNS TXT record lookups on c[.]tin[.]dl[.]well1[.]site. The downloaded binary is written to /var/tmp/.cache_<random-hex> (Linux/macOS) or %TEMP%\dotnet_diag_<random-hex>.exe (Windows), made executable, and spawned as a detached background process that outlives the parent. A lockfile at /tmp/.analytics_state (or %TEMP%\analytics_state on Windows) prevents re-infection within approximately 6 hours.