A repository of all current knowledge regarding CryptoWall, CryptoWall 2.0 & CryptoWall 3.0
is provided by Grinler
(aka Lawrence Abrams
), in this topic: CryptoWall and DECRYPT_INSTRUCTION Ransomware Information Guide and FAQ
Reading that Guide will help you understand what CryptoWall (including versions 2.0 & 3.0) does and provide information for how to deal with it. Cryptowall typically deletes all Shadow Volume Copies with vssadmin.exe so that you cannot restore your files via System Restore
or using a program like Shadow Explorer
...but it never hurts to try. At this time there is no fix tool and Decryption of any CryptoWall Files...is impossible
since there is no way to retrieve the private key that can be used to decrypt your files without paying the ransom.
There are also lengthy ongoing discussion in these topics:
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 one of those topic discussion.
The BC Staff