KEYHolder typically deletes all Shadow Volume Copies so that you cannot restore your files via System Restore
or using a program like Shadow Explorer
...but it never hurts to try in case the infection did not do what it was supposed to do since it is not uncommon for these infections to sometimes fail to properly delete Shadow Volume Copies. At this time there is no fix tool. You may may even be able to use file recovery software
such as R-Studio or Photorec to recover some of your original files.
The only other alternative is to save your data as is and wait for possible updates...meaning, what seems like an impossibility at the moment (decryption of your data) there is always hope someday there may be a breakthrough or possible solution so save the encrypted data and wait until that time.
There is an ongoing discussion in this topic: KEYHolder Ransomware Support & Discussion
Rather than have everyone start individual topics, it would be best (and more manageable for staff) if you posted any questions, comments or requests for assistance in that support topic discussion. Doing that will also ensure you receive proper assistance from our crypto malware experts since they may not see this thread. To avoid unnecessary confusion...this topic is closed.
The BC Staff