Ransomware Research
Khonsari Ransomware
Khonsari is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Log4Shell Ransomware.
Quick Facts
- Ransomware Family
- Khonsari
- First Seen
- December 1, 2021
- Known Aliases
- Log4Shell Ransomware
How Khonsari Ransomware Works
Targeted Files
original sample doesn't work (attempts to connect to http://3.145.115.94/zambos_caldo_de_p.txt)
File Encryption Patterns
Khonsari modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..khonsariRansom Note and Payment Demands
After encrypting files, Khonsari displays ransom notes demanding payment for file recovery:
HOW TO GET YOUR FILES BACK.TXTRansom message:
notes/HOW TO GET YOUR FILES BACK.TXT
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Khonsari ransomware:
FecitAntiques.exekhonsari.exebinarygroenhuyzen.exe
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About This Analysis
This Khonsari 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 Khonsari.
Last updated: July 30, 2025