What is Mpaj file extension .Mpaj file extension is a filename extension that is used by the 219th version of the STOP ransomware to mark files that have been encrypted. This means that all files with this filename extension are encrypted by ransomware, which received the name ‘Mpaj ransomware’. Like other ransomware, it is created … Continue reading How to remove Mpaj ransomware virus, Decrypt .mpaj files for free