Chronic Finder Crash - Ventura Bug?

Please run Etrecheck and post its full report here.

Use the “additional text” button and paste the report into the text box.

What you experience is obviously not normal. The report is our best chance to figure out what it is that is causing it.

Malware - Malware detected.

I will look at the rest of the report, but this needs immediate action.

Malware:

Launchd: ~/Library/LaunchAgents/com.appicon.AppIcon.plist

Executable: ~/Library/Application Support/AppPolicy/AppIcon -i -c 453483 -isn 48546623-38AE-40F3-ADD4-CBF6DB6433C6

Reason: Malware pattern match

Restart in Safe Mode.

In Finder, press Command-Shift-G and paste

~/Library/LaunchAgents/com.appicon.AppIcon.plist

Drag the file to the trash.

Repeat with

~/Library/Application Support/AppPolicy/AppIcon

Empty the trash, restart your mac normally again, and post a new report.

Also:

[Other] com.onlineapplicationnotice.AppNotice.plist (Malware - installed 2016-05-30)

Command: ~/Library/Application Support/AppCommon/AppNotice --protect

You should completely uninstall avast. It is obviously not protecting you from anything, and can conflict with built-in security, and cause decreased performance.

This is apparently still there:

Malware:

Launchd: ~/Library/LaunchAgents/com.onlineapplicationnotice.AppNotice.plist

Executable: ~/Library/Application Support/AppCommon/AppNotice

Reason: Malware name match

Oh... and this:

System Extensions:

[Removed after restart] Avast Antivirus Network Extension - version 10.2.256 (AVAST Software a.s. - 2023-02-10)

Application: /Applications/Avast.app - version 10.2.256 (Not found!)

It seems that you did not restart your mac after deleting those?