Ransomware has been hitting the healthcare section recently and it is making some big splashes on the headlines. Luckily as encryption algorithms go, a number of ransomware have already been decrypted by the good guys.
The article at Bleepingcomputer by Lawrence Abram, details how to remediate the Petya Ransomware and links a decryption tool.
Petya Ransomware’s Encryption Defeated and Password Generator Released