Suddenly stopped by avast & unable to install on Mac

[ShadowcatX]

I'm on OS X 10.11.6 (El Capitan) and just encountered my first issue with Filezilla. When I went to launch filezilla my avast stopped it from launching, claiming it had a virus. That's odd to me because I used it yesterday without an issue and because I don't do any risky behaviors on this computer. But anything is possible. So I tried it once more and same result. So whatever, so I uninstalled filezilla and went to reinstall it. I downloaded the version for Mac and when I attempt to re-install it, avast is coming up with 2 more infections, specifically a file overstudiousness. Also, the installation has the circle with a line through it on it, and attempting to install says "You can't open the application "FileZilla" because PowerPC applications are no longer supported." Also, it opened another 2 alerts on the file overstudiousness.

ETA: I disabled fileshields on avast and got it to install. The install still showed the circle with a line through it, but it worked fine. I'm confused as to what might have changed, either on FileZilla or Avast to have caused this issue literally over night.

[boco]

Simply report the false positive to them so they can fix their detection samples!

[trashr]

Hi ShadowcatX.
Same issue with me on OS Mojave 10.14.2.
Suddenly Filezilla stopped to work: trying to open it I have a message "impossible to open the app" and if I try to download the latest version for a new clean install, Avast blocks the download and claimed it's a virus.
Did you find any possibile solution, beside shutting Avast down?
Thank you.
R.

[boco]

The solution is one post above yours. *facepalms hard*

[xycmu]

Sophos Anti-virus also flags the overstudiousness file in the bundled installer: FileZilla_3.40.0_macosx-x86_setup_bundled.dmg

For anyone still with reservations about ignoring this false detection, download the tar.bz2 version here:
FileZilla_3.40.0_macosx-x86.app.tar.bz2

Located on the downloads page: https://filezilla-project.org/download.php?show_all=1

Extract the FileZilla app and copy it into Applications. It shouldn't result in any false alerts.

[okiegirl]

Sophos Anti-virus also flags the overstudiousness file in the bundled installer: FileZilla_3.40.0_macosx-x86_setup_bundled.dmg

For anyone still with reservations about ignoring this false detection, download the tar.bz2 version here:
FileZilla_3.40.0_macosx-x86.app.tar.bz2

Located on the downloads page: https://filezilla-project.org/download.php?show_all=1

Extract the FileZilla app and copy it into Applications. It shouldn't result in any false alerts.

Thank you xycmu. This did the trick for me. MacOS 10.12.6