Ransomware Research
BlackRuby Ransomware
BlackRuby is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BlackRuby
- First Seen
- February 1, 2018
How BlackRuby Ransomware Works
Targeted Files
Encrypted_%random string%.BlackRuby Regex ^Encrypted_[A-Za-z0-9]{32,48}\.BlackRuby$
File Encryption Patterns
BlackRuby modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..BlackRubyPrefixes added to encrypted files:
Encrypted_Ransom Note and Payment Demands
After encrypting files, BlackRuby displays ransom notes demanding payment for file recovery:
HOW-TO-DECRYPT-FILES.txtRansom message:
notes/HOW-TO-DECRYPT-FILES.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with BlackRuby ransomware:
Windows Defender.exeWindowsUI.exefile.exeWINDOWSUI.EXEwindowsui.exe
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About This Analysis
This BlackRuby 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 BlackRuby.
Last updated: July 30, 2025