Re: So the next evolution of ransomware
"Will hijack your browser or Outlook or some other whitelisted application and use it to encrypt your folders. "
You have posted this in reply to a comment that Outlook wasn't one of the whitelisted apps.
Presumably the whitelisted apps have to be digitally signed and will lose their white-listing if they import DLLs that aren't also approved. There's no reason why this can't be made watertight. It doesn't look to be using anything that hasn't been part of the Windows kernel for about a decade. Having said that, I will grant you that whether it is actually effective is another matter.