Why is admin needed to build? Why so many virus positives?

Basically the two questions, downloaded the prebuilt binary from the official site linked here and Windows Defender freaked out. Uploaded to virustotal and got like 20 positives. Figured I'd build from source but the build process needs Admin rights which is just raising all sorts of flags for me. Since when does a build process need admin? Edit: That's kinda a tautological answer to why it needs admin privs: because it requests them. I know why GenP itself needs them, but why do the build scripts?