pfp-forms-insurance-health@20.2.2

Analysis

Binary dropper disguised as an internal forms/insurance module. On require(), the package fingerprints the host (platform, architecture, hostname, CPU count, memory, environment variables) and downloads a platform-specific binary payload from Cloudflare Workers C2 infrastructure (oob-worker[.]cf100-416[.]workers[.]dev, oob-worker[.]cf101-adf[.]workers[.]dev, oob-worker[.]cf102-baf[.]workers[.]dev, oob-worker[.]cf103-070[.]workers[.]dev) via HTTPS. If HTTP download fails, it falls back to DNS TXT record queries against tin[.]dl[.]well1[.]site (and platform-specific variants) to reconstruct a base64-encoded payload. The downloaded binary is written to /var/tmp/.cache_<hex> (Linux/macOS) or C:\Windows\Temp\dotnet_diag_<hex>.exe (Windows) and spawned as a detached background process via cmd.exe /c start /b or /bin/sh -c. The package has no repository, no README, and no lifecycle scripts — the payload runs automatically when the module is imported via require("./_compat") in the entry point.