After downloading and installing the latest version of the Tor browser - torbrowser-install-win64-11.0.15_en-US
Avast reports that firefox.exe (91.10.0.8188) is infected with "Win64:Evo-gen [Susp]".
Avast Program version: 22.6.6022 (build 22.6.7355.731)
Virus definitions: 220706-0
I have scanned the same installation using online AV/Malware scanners and none reported any issues, so I think this is a false alert.
Could you please try downloading the latest version of Tor and reproducing the issue ?