All Files Converted To .paas Extension

Today, all files in my drives were converted with .PAAS extension. I found out that this a ransomware and a new online variant. How do I get them back to their original file extensions? Emsisoft and Grindinsoft can't revert them back. The scan result indicates

"Error: No key for New Variant online ID: KzGUJ6smvRLXCCQk1kpZR29okj5PpvaM99N7afoi
Notice: this ID appears to be an online ID, decryption is impossible".

Please help. Thanks

 

And there is literally nothing that can be done cause am having the same issue.
Kindly recommend something............ either to format,reset,flash..... anything