What is Qqjj virus? Qqjj virus is a ransomware that belongs to the ransomware family called STOP (Djvu). Ransomware is a form of malware that encrypts the victim’s files and demands a ransom for decrypting them. The Qqjj virus encrypts files, renames them by appending the .qqjj extension, and creates files named “_readme.txt” containing the