A new version of the CryptXXX Ransomware was discovered by Brad Duncan that includes changes to encrypted file names, uses modified ransom note names, a new template, and a new TOR payment site description. This version also does not include a method of contacting the ransomware devs if a victim has payment problems. An encrypted file will retain the same name that it had before it was encrypted. This release no longer uses special extensions for encrypted files to make it more difficult for administrators to identify files.
Source: https://www.bleepingcomputer.com/news/security/new-cryptxxx-changes-name-to-microsoft-decryptor/