Ransomware Research
Hudson Ransomware
Hudson is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Hudson
- First Seen
- April 1, 2025
How Hudson Ransomware Works
Targeted Files
Full extension -> .{228FE72A-A53A-0D21-81C3-FC148F9E3AC8}.hudson
File Encryption Patterns
Hudson modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..hudsonRansom Note and Payment Demands
After encrypting files, Hudson displays ransom notes demanding payment for file recovery:
README.TXTRansom message:
notes/README.TXT
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with Hudson ransomware:
pykbxarj.exe
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About This Analysis
This Hudson 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 Hudson.
Last updated: July 30, 2025