devplatform-api-v2-resources-metadata@35.7.7

Analysis

On require, the package executes a multi-stage dropper. index.js loads _platform.js, which fingerprints the OS/arch and downloads a platform-specific binary over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, and oob-worker[.]cf101-adf[.]workers[.]dev at paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, or /pkg/package.exe. If the HTTP download fails, it falls back to a DNS TXT chunked base64 channel under *.dl[.]wel1[.]ru (queried via c[.]sdk[.]dl[.]wel1[.]ru). The downloaded payload 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 (/bin/sh -c <path> & or cmd.exe /c start /b). The package also ships a large decoy analytics SDK (lib/telemetry.js) that is never invoked. No credentials are exfiltrated by this stage; it is a remote binary download-and-execute loader.