Fortunately, users of Malwarebytes Anti-Malware Pro are protected from Crytolocker via the PRO version's realtime malware-execution-prevention and blocking of malware sites and servers
That is a bit sweeping, if I was writing that I would add the proviso "of currently known versions"
Avast with hardened mode set to aggressive blocks the test file provided by FoolishIT as part of their protection system. This blocks files, via system permissions settings, from running from known (again that word) running locations
CryptoPrevent install this programme to lock down and prevent crypto ransome ware
https://dl.dropboxusercontent.com/u/73555776/CryptoPrevent.JPG