What is Erif file extension .Erif file extension is a filename extension that is used by the 242th 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 ‘Erif ransomware’. Like other ransomware, it is created … Continue reading .Erif file extension ransomware (Erif File Recovery Guide)