Ransomware Research
Sphinx Ransomware
Sphinx is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Sphinx
- First Seen
- November 1, 2019
How Sphinx Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Sphinx modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..sphinxRansom Note and Payment Demands
After encrypting files, Sphinx displays ransom notes demanding payment for file recovery:
HOW TO DECRYPT FILES.txtRansom message:
notes/HOW TO DECRYPT FILES.txt
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About This Analysis
This Sphinx 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 Sphinx.
Last updated: July 30, 2025