I Can't Completely Remove Anti-Theft App (AAT app still appears in list)

Hi,

I have removed the Anti-Theft app properly using the wizard from within the avast Mobile Security settings on my android phone. I then removed the Mobile Security app as well.

The problem is that there is STILL an app icon left in my app list, that cannot be removed as it appears to be a system app. The app info is as follows:

AAT version 4.1.2-E97120d.1366289126

it appears also as a file here:

/system/app/AAT.apk

I tried using an uninstaller app, but it said the phone needed to be rooted to remove this system app.

My phone is NOT rooted, so how can I remove this AAT app?

Thank you.

this is not done by our installer, the name of the APK is strange. either it was done manually or its a different app.