W32/Chir Virus.B

Rajike,

Let me restate that 'repairing' 10,000+ files corrupted by a file infector is not an action I would recommend.

So, if you wish to proceed, you do so at your own risk.

Your AntiVirus should find the infector.

As far as the 10,000+ infected files detected, if you want Avira Antivir to automatically repair them:
•Right-click on the small umbrella icon in the system tray > Configure Antivir
•Check: Expert Mode
•Go to Scanner > Scan > Action on detection
•In the right pane switch mode from Interactive to Automatic
•Select the Primary action (in your case: repair)
•Check: Copy file to quarantine before action. This keeps track of the potentially harmful files.
•Click OK to validate.


The Secondary action is activated only if you use repair as the Primary one.
In case the file can't be repaired, depending on how you configured the Secondary action, Avira either deletes, ignores, or sends the file to Quarantine.

The image below has the Primary action as delete. You will need to change it to repair.

I think that will delete all the files infected with it?

If the computer does not work normally, do not be surprised.

As stated before, a format and install is the best and the safest solution.

You may want to post your concern at the following forum:
Installation & Setup - Windows 7 Help Forums

A file infector can infects all .EXE files found in drives C to Z!!

It appends its virus code to the target files and modifies them to point to virus code.

Once you have done a fresh install, before you use the internet, you may want to consider your surfing habits and what you download/install on your PC. It doesn't matter what AV you run if you don't take prudent steps to avoid re infection.

Andy