.1cbu1 is Princess Locker ransomware affected file
Key Features: .1CBU1 File Extension
What is an .1CBU1 file?
File extension 1cbu1 seems to be related to a ransomware that appeared in September 2016 and was labeled as Princess Locker. Much like any other ransomware, it encrypts users files, renames the suffix and demands ransom for the decryption.