CHIRP

Hello, information assurance and security industry professional here.

That flag seems to just be linked to how common the digital signed certificate for the application is and your computers execution bypass policy.

Norton/Symantec will often flag applications that use "uncommon" signed certificates as suspicious. It's a good precaution, however, it will give false positives. That would be the case here.

Virustotal.com shows no issues.
https://www.virustotal.com/gui/file/91ae15be83cef4771fdb2fbe5c1a108a3949364e722be7eff9e1e9408551d6e0