BitKangarooDecrypter is a ransomware decryptor that decrypts files encrypted with the .bitkangoroo extension.
BitKangarooDecrypter uses the same familiar interface that all of Mr. Gillespie's decryptors use. If you haven't used them before, all you have to do is select the directory where the encrypted files are and click on decrypt. There are no other options or features to speak of.
If you have files locked by the BitKangaroo ransomware, then BitKangarooDecrypter should be able to unlock them for free.