eacq-payform-core@20.3.6

Analysis

eacq-payform-core@20.3.6 is a combosquat package that downloads and executes a remote binary on install. The package's index.js loads _vendor.js at require time, which fingerprints the host platform and architecture, then downloads a platform-specific binary from one of four Cloudflare Workers C2 hosts (oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev, oob-worker[.]cf99-9b3[.]workers[.]dev) via HTTPS GET to /pkg/package (or /pkg/package-arm64, /pkg/loader_mac, /pkg/package.exe depending on platform). If HTTPS fails, it falls back to a DNS TXT-based chunked download from 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 with stdio ignored. The package has no repository, no README, and no lifecycle scripts in its manifest — the payload runs silently on module load.