I was infected by Grancrab 5.1 and the bitfender grancrab decryptor does not work. The extension of the files is srpxwg and the txt name is SRPXWG-DECRYPT.txt.
In case there is no solution, is it possible to backup the encrypted files until the day there is a decryptor tool?
This the newest version of the ransomware.
Currently, there is no solution.
The Bitdefender decryptor decrypts only until version 5.0.3 successfully - there are at least 10 more versions released after that.
Not sure what the details are but there might never be a decryptor.
Save your most important files and start doing backups - once you have been a ransomware victim you may be targeted by the malware authors in the future.
Hopefully, in the future there will be a solution, but it is a tough ransomware.