As far as I know, these ransomware pests can easily get by everything sometimes anyway, you need to be prepared if it does:
If you have FBI or ICE or Cryptolock or any other ransomware, it's unlikely ANY function works like taskmanager, these nasty bugs embed themselves in several system and registry files, even booting into safe mode usually won't help so here's what you need to do and I have used this to get rid of FBI virus...you need to have a small flash drive or any empty one and go online to here:
http://dl.surfright.nl/Kickstart-User-Ma...
this is a bootable USB drive program that will run right off memory, download hitman pro and click the little kickstart icon and have flash drive already in PC, it will build it for you, when its done, remove flash drive to infected machine and change boot options to first boot off USB drive...you will probably see ransomware still pop up, don't worry just yet, kickstart usually pops up soon after along with it, give it a few minutes, when it does, scan and follow directions to remove, it should restore some function to get you back to desktop but you aren't done yet, boot normal mode and run another scan with hitman pro, it only has 30 day trial so use it, it will find other pieces of that bug...also scan with malwarebytes free version here:
https://www.malwarebytes.org/
update and run FULL SCAN, let it find whatever, reboot...then run aanother FREE program from malwarebytes, anti-rootkit scanner here:
https://www.malwarebytes.org/products/ot...
So a few steps but it should rid you of it but you need a few steps..
1: Hitman pro kickstart
2: malwarebytes FREE
3: malwarebytes anti-rootkit
This beats paying $200-$400 and its ALL free it just takes a little time