Remove Win7 Defender 2013, XP Defender 2013, Vista Defender 2013 and Win 8 Defender 2013 by Britec is a fake virus removal program, its a scam that tries to get you to buy the fake antivirus program.
rkill:
https://download.bleepingcomputer.com/grinler/rkill.com
malwarebytes:
https://www.malwarebytes.org/mbam/program/mbam-setup.exe
https://www.bleepingcomputer.com/download/windows/utilities/fixexec