You can use Malwarebytes to remove automatically
Malwarebytes.org
or to Manually remove Security Tool Malware follow the steps below.
Kill this process
4946550101.exe
Delete these registry values
HKEY_CURRENT_USER\Software\Security Tool
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Curr entVersion\Run "4946550101"
Delete these files
4946550101.bat 4946550101.cfg 4946550101.exe Security Tool.lnk Security Tool.lnk
Delete these directories
%UserProfile%\Application Data\4946550101