During trial installation of X-Plane 11 I got an notification from Windows Defender that it spotted Trojan:Win32/Bearfoos.A!ml. It looks like a false positive for me, but still it leaves a very bad taste.
Disclaimer: I am not a security expert and I do not take any responsibility for my opinion - it is up to you to verify if it is free of any malicious code.
This happens occasionally for new versions of 7-zip and more often for niche open source tools which offer installers or executables for windows. You should have a bad taste for antivirus. It's never really worked.
I haven't run resident virus scanning for at least a decade or more, including Windows Defender on my Windows machine, and I haven't had a single meaningful issue during that time.
(And I know this with high confidence because I do schedule weekly full disk scans on my computers and NAS and they haven't ever found a damn thing that wasn't a false positive or a fake-positive.)
Disclaimer: I am not a security expert and I do not take any responsibility for my opinion - it is up to you to verify if it is free of any malicious code.