Ransomware Research
Greystars Ransomware
Greystars 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
- Greystars
- First Seen
- April 1, 2018
How Greystars Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Greystars modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..greystars@protonmail.com..alanwalkergod@protonmail.comRansom Note and Payment Demands
After encrypting files, Greystars displays ransom notes demanding payment for file recovery:
HOW-TO-RECOVER-YOUR-FILES.HTMLRansom message:
notes/HOW-TO-RECOVER-YOUR-FILES.HTML.txt
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About This Analysis
This Greystars 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 Greystars.
Last updated: July 30, 2025