message
notes/note.txt
Ransomware Research
Kozy.Jozy Ransomware
Kozy.Jozy is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- Kozy.Jozy
- First Seen
- June 1, 2016
How Kozy.Jozy ransomware works
File modification behavior
Kozy.Jozy updates file modification timestamps after encryption.
File encryption patterns
Kozy.Jozy modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- ./\.[A-F0-9]{20}_\d{1,2}_[A-Z0-9]{4,5}\b/
Ransom note and payment demands
After encrypting files, Kozy.Jozy displays ransom notes demanding payment for file recovery:
screenshot
notes/w.jpg
Location: Desktop
About this analysis
This Kozy.Jozy ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Kozy.Jozy.
Detection coverage
Elastio detects Kozy.Jozy inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Kozy.Jozy across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.