Ransomware Research
JohnBorn Ransomware
JohnBorn is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2021, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- JohnBorn
- First Seen
- January 1, 2021
How JohnBorn Ransomware Works
File Encryption Patterns
JohnBorn modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..johnborn@cock_liRansom Note and Payment Demands
After encrypting files, JohnBorn displays ransom notes demanding payment for file recovery:
RecoveryInstructions.txtRansom message:
notes/RecoveryInstructions.txt
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About This Analysis
This JohnBorn ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like JohnBorn.
Last updated: July 30, 2025