Here they are some decrypter tools about CryptON ramsomware.
1.) Emisoft tool can be directely downloaded from this link
https://decrypter.emsisoft.com/download/crypton
Step by step procedure can be found here.
https://www.bleepingcomputer.com/news/security/emsisoft-releases-a-decryptor-for-the-crypton-ransomware/
In any case you should drag and drop encrypted files to .exe tool.
After that you will find decryting key (after a while)
Once finished you will prompted about license acceptance windows and then for adding files/folder that you have decrypting necessity.
2.) Kaspersky decrypter
http://media.kaspersky.com/utilities/VirusUtilities/EN/rakhnidecryptor.zip
3.) Eset decrypter
https://download.eset.com/com/eset/tools/decryptors/crysis/latest/esetcrysisdecryptor.exe