Its either a false positive, Or else whereever u downloaded it from put a virus on, But most likey to be false positives, So try disabling ur antivirus then.
1. Disable ur antivirus
2. DID U CHECK WHERE U DOWNLOADED IT?
PerX is not a virus, theyre false positives, it is detected as a virus because of themidia and shit and because it is a hacking tool.
so yeah either disable your antivirus or uninstall it.