dolyame-ui-menu@35.6.1

Analysis

dolyame-ui-menu@35.6.1 is a trojanized "React components" package that drops and executes a remote binary on install/require. Its index.js loads _polyfill.js, which fingerprints the OS/architecture and downloads a second-stage executable over HTTPS from Cloudflare Workers hosts oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf100-416[.]workers[.]dev, and oob-worker[.]cf103-070[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, and /pkg/package.exe. If the HTTPS download fails, it retrieves the payload via DNS TXT records from c[.]sdk[.]dl[.]wel1[.]ru (and sdk./ext./pkg./net[.]dl[.]wel1[.]ru). The downloaded payload is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe in %TEMP% on Windows), made executable, and launched detached via /bin/sh -c "<path> &" or cmd.exe /c start /b. A stamp file (.analytics_state / analytics_state) throttles repeat execution. The package also ships an 81KB decoy telemetry module to appear legitimate.