I got caught with my pants down with a broken DFS/Backup policy and had to pay those bastards their ransom. I received their decrypt utility along with the private and public key files. The decryption works on some files but is causing corruption in JPEG files (or any file that uses JPEG internally; i.e. PDF, MPEG, Word documents) and larger XLS files.
I would like to try to decrypt them through alternate means since I have the key. Using openssl rsautl -decrypt does not work because the files are large.
Any ideas? We have a few crucial files that I'd love to be able to recovery.