Repair “running of .exe files” after infected by "Antivirus 2010″, "XP Defender"…etc. Maleware
Click Start, Run. Type command and press Enter. Type notepad and press Enter.
Notepad opens. Copy all the text below into Notepad.
Windows Registry Editor Version 5.00
[-HKEY_CURRENT_USER\Software\Classes\.exe]
[-HKEY_CURRENT_USER\Software\Classes\secfile]
[-HKEY_CLASSES_ROOT\secfile]
[-HKEY_CLASSES_ROOT\.exe\shell\open\command]
[HKEY_CLASSES_ROOT\exefile\shell\open\command]
@="\"%1\" %*"
[HKEY_CLASSES_ROOT\.exe]
@="exefile"
"Content Type"="application/x-msdownload"
Save this as fix.reg to your Desktop (remember to select Save as file type: All files in Notepad.)
Double Click fix.reg and click YES for confirm.
Reboot your computer.
Then, use Malwarebyte’s Anti-Malware to remove the rest.
http://www.malwarebytes.org/mbam/program/mbam-setup.exe