Hello, we have avast endpoint protection suite for 200 computers accross the network. Recently we were infected with mabezat virus and it spreaded accross in almost all windows xp machines. We tried every possible ways to clean it and we thought we managed. But two weeks back lot of woord, excell,ppt and some other files were curropted from the server. When I checked the last modified date and time alll the curropted files were showing the same time and date. This means it got curropted by a virus or through scanning. We have no clue whats happening. The same thing has happened again yesterday with some more files curropted. Recently we started seeing .trz files in some of the folders. Can any one please advice what to do at this stage.We are a school and its effecting the students courseworks also.
Test one of the infected files at an online virus scanner like virustotal.com and see if it is being also identified by other scanners. If Avast is indeed missing this you can send a sample to the virus lab at virus (at) avast.com