Ransomware Research
CyberResearcher Ransomware
CyberResearcher is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CyberResearcher
- First Seen
- April 1, 2018
How CyberResearcher Ransomware Works
File Encryption Patterns
CyberResearcher modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CYBERRESEARCHERRansom Note and Payment Demands
After encrypting files, CyberResearcher displays ransom notes demanding payment for file recovery:
READ_IT.htmlRansom message:
notes/READ_IT.html
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with CyberResearcher ransomware:
Cyberresearcher.exe
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About This Analysis
This CyberResearcher 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 CyberResearcher.
Last updated: July 30, 2025