Ransomware Research
RobbinHood Ransomware
RobbinHood is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Enc_RobbinHood.
Quick Facts
- Ransomware Family
- RobbinHood
- First Seen
- April 1, 2019
- Known Aliases
- Enc_RobbinHood
How RobbinHood Ransomware Works
File Encryption Patterns
RobbinHood modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..enc_robbin_hood..rbhdPrefixes added to encrypted files:
Encrypted_Ransom Note and Payment Demands
After encrypting files, RobbinHood displays ransom notes demanding payment for file recovery:
_Decryption_ReadMe.html_Readme_Decrypt__Files.htmlTechnical Indicators
Associated Executable Files
The following executable files are associated with RobbinHood ransomware:
RobinHood.exerobinhood.exe0f9cda14-26cf-45aa-9eef-86a8aedb7cbb winlogon.exe BAD!.exesteel.exeRuntime_Service.exerobnr.sys
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About This Analysis
This RobbinHood 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 RobbinHood.
Last updated: October 30, 2025
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