Files with Dexter extension can be found as files encrypted and affected by a ransomware labeled as Troldesh.
DEXTER file extension - Troldesh (variant) ransomware affected file
What is Dexter file? How to open Dexter files?
File type specification:
File extension Dexter is used by a variant of ransomware called Troldesh which much like other similar threats encrypts users files and demands bitcoins as ransom. It is distributed via .zip files downloaded from internet links provided in a spam email.
