Ground Control

A removal tool can be found here:

http://www.2-spyware.com/remove-vista-security-2012.html

Manual instructions:

Delete registry values:
HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\BrowserEmulation "TLDUpdates" = '1'
HKEY_CURRENT_USER\Software\Classes\.exe\shell\open\command "(Default)" = '"%LocalAppData%\kdn.exe" -a "%1" %*'
HKEY_CURRENT_USER\Software\Classes\exefile\shell\open\command "(Default)" = '"%LocalAppData%\kdn.exe" -a "%1" %*'
HKEY_CLASSES_ROOT\.exe\shell\open\command "(Default)" = '"%LocalAppData%\kdn.exe" -a "%1" %*'
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\open\command "(Default)" = '"%LocalAppData%\kdn.exe" -a "C:\Program Files\Mozilla Firefox\firefox.exe"'
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\safemode\command "(Default)" = '"%LocalAppData%\kdn.exe" -a "C:\Program Files\Mozilla Firefox\firefox.exe" -safe-mode'
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command "(Default)" = '"%LocalAppData%\kdn.exe" -a "C:\Program Files\Internet Explorer\iexplore.exe"'
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center "AntiVirusOverride" = '1'
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center "FirewallOverride" = '1'

Delete files:
%AllUsersProfile%\U3F7PNVFNCSJK2E86ABFBJ5H %LocalAppData%\ppn.exe %Temp%\U3F7PNVFNCSJK2E86ABFBJ5H %LocalAppData%\U3F7PNVFNCSJK2E86ABFBJ5H %AppData%\TEMPLATES\U3F7PNVFNCSJK2E86ABFBJ5H

Thanks to http://www.2-spyware.com for the instructions.