Files with comrade suffix can be typically encountered as encrypted files affected by the Comrade ransomware.
COMRADE file extension - Comrade ransomware affected file
What is comrade file? How to open comrade files?
File type specification:
File extension comrade seems to nowadays related to what seems to be a variant of Fantom ransomware, labeled as Comrade randomware. This type of ransomware also displays fake Windows Update when it does it's infernal thing.