Ransomware Research
Jett Ransomware
Jett is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Jett
- First Seen
- March 1, 2025
How Jett Ransomware Works
File Encryption Patterns
Jett modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..jettRansom Note and Payment Demands
After encrypting files, Jett displays ransom notes demanding payment for file recovery:
ReadMe.txtRansom message:
notes/ReadMe.txt
Note locations:
EveryFolderinfo.htaRansom message:
notes/info.hta
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with Jett ransomware:
Ransomware.exe
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About This Analysis
This Jett 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 Jett.
Last updated: July 30, 2025