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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
Targeted Files
Written in Go template for encrypted files -> Encrypted_<random{16}>.enc_robbinhood Requires c:\Windows\Temp\key.pub
File Encryption Patterns
RobbinHood modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..enc_robbin_hood
..rbhd
Prefixes 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.html
Technical Indicators
Associated Executable Files
The following executable files are associated with RobbinHood ransomware:
RobinHood.exe
robinhood.exe
0f9cda14-26cf-45aa-9eef-86a8aedb7cbb winlogon.exe BAD!.exe
steel.exe
Runtime_Service.exe
robnr.sys
Elastio Can Help You
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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: July 30, 2025