The PETYA ransomware is just one of the recent examples of malware that encrypts victims' hard drives until a fee is paid. The advice from the government is not to pay the ransom -- or at least not expect to get a decryption key if you do -- but a password generator has been created that means you can decrypt your hard drive for free.
While TeslaCrypt 4 boasts 'unbreakable encryption', the same cannot be said of PETYA, although the PETYA ransomware does have the irritating habit of overwriting MBRs. This does mean that there is no way to interact with the drive on the infected computer, but with access to a spare machine to read the drive and access to the online tool created by Leostone, you could have your data back in seconds. As the tool's website proudly proclaims, you can "Get your petya encrypted disk back, WITHOUT paying ransom!!!" -- here's what you need to do.
http://betanews.com/2016/04/10/free-petya-password-generator/
