for those who are really infected from this virus
How To Kill Ahsan's Virus
Step 1: - just reinstall you windows
Step 2: - donot explore in any drive of windows
Step 3: - download tool created by me & Log in to safe mode as Administrator run MScan.bat
click below link to download MScan.bat
http://minhajat.sitesled.com/yahoo/MScan.bat
Thanks to Minhaj
who really done Tremendous effort