devplatform-react-scripts@35.2.9

Analysis

devplatform-react-scripts@35.2.9 (a combosquat of react-scripts) runs a downloader at require time. index.js loads _init.js, which fingerprints the platform and downloads a platform-specific binary over HTTPS from oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf103-070[.]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 reassembles a payload from base64 DNS TXT records served under c[.]sdk[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under %TEMP% on Windows), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c "path &" on Unix). Execution is skipped if DISABLE_TELEMETRY, ANALYTICS_OPT_OUT or DO_NOT_TRACK is set, and a marker file at /tmp/.analytics_state throttles repeat runs.