Ransomware Research
RobinHood Ransomware
RobinHood is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: HelpYemen.
Quick Facts
- Ransomware Family
- RobinHood
- First Seen
- August 1, 2017
- Known Aliases
- HelpYemen
How RobinHood Ransomware Works
Targeted Files
Requireds C&C to send date
File Encryption Patterns
RobinHood modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..robinhoodRansom Note and Payment Demands
After encrypting files, RobinHood displays ransom notes demanding payment for file recovery:
READ_IT.txtRansom message:
notes/READ_IT.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with RobinHood ransomware:
Robinhood.exe39.bin
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About This Analysis
This RobinHood 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 RobinHood.
Last updated: July 30, 2025