I just wanted to add slightly different removal advice, though removal instructions at bleepingcomputer.com are also good. Also, you can use other malware removal tools, not just Malwarebytes. You can choose from SUPERAntispyware, Spybot S&D, Spyware Doctor or Combofix. All programs are free.
1. Click Start->Run (or WinKey+R). Input: "command". Press Enter or click OK.
2. Type "notepad" as shown in the image below and press Enter. Notepad will open.
3. Copy and past the following text into Notepad:
Windows Registry Editor Version 5.00
[-HKEY_CURRENT_USER\Software\Classes\.exe\she
ll\open\command]
[-HKEY_CURRENT_USER\Software\Classes\secfile\
shell\open\command]
[-HKEY_CLASSES_ROOT\.exe\shell\open\command]
[HKEY_CLASSES_ROOT\.exe]
@="exefile"
"Content Type"="application/x-msdownload"
[-HKEY_CLASSES_ROOT\secfile]
4. Save file as "exefix.reg" (without quotation-marks) to your Desktop.
NOTE: choose Save as type: All files
5. Double-click to open exefix.reg. Click "Yes" for Registry Editor prompt window. Then download malware removal tool and run a full system scan.
Source:
http://www.2-spyware....et-security-2010.html