devplatform-http-client@35.8.6

Analysis

devplatform-http-client@35.8.6 is a multi-stage dropper disguised as an HTTP client wrapper. On module load it fingerprints the host OS/architecture and downloads a platform-specific binary over HTTPS from Cloudflare Workers endpoints oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, and oob-worker[.]cf101-adf[.]workers[.]dev (paths /pkg/package, /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe). If the HTTP download fails it falls back to retrieving the payload in chunks via DNS TXT records from c[.]sdk[.]dl[.]wel1[.]ru. The downloaded binary is written to /var/tmp/.cache_<hex> (or dotnet_diag_<hex>.exe under the Windows temp dir), made executable, and launched as a detached background process (cmd.exe /c start /b on Windows, /bin/sh -c '... &' on POSIX) so it outlives the parent. The package performs host fingerprinting (platform, arch, hostname, CPU count, memory) before fetching and executing the remote payload.