Here is a small victory in the battle against ransomware.  In many cases, strains of ransomware mutate and evolve to the point that these types of tools are no longer effective, but it is always good to have these in the tool kit.

http://www.scmagazine.com/bitdefenders-free-tool-unlocks-teslacrypt-locky-ctb-locker-infections/article/486699/