Ransomware Research
Styx Ransomware
Styx is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Styx
- First Seen
- November 1, 2017
How Styx Ransomware Works
Targeted Files
Contains anti-vm, anti-emulation tricks
File Encryption Patterns
Styx modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..styx
Ransom Note and Payment Demands
After encrypting files, Styx displays ransom notes demanding payment for file recovery:
/^[0-9]{1}_HELP_DECRYPT_FILES([0-9]{1})?\.txt$/
Ransom message:
notes/0_HELP_DECRYPT_FILES2.txt
Note locations:
UserFolders
StartUp
/^[0-9]{1}_HELP_DECRYPT_FILES([0-9]{1})?\.html$/
Ransom message:
notes/0_HELP_DECRYPT_FILES.html
Note locations:
UserFolders
StartUp
Technical Indicators
Associated Executable Files
The following executable files are associated with Styx ransomware:
STX.exe
Ransom.exe
saturn_aimbot_v1.3-unpacked.exe
FacebookHackerTool V4.7.exe
Reloder%20Activator.exe
STX1.2.exe
installer.exe
Crack.exe
level7.exe
Application.exe
Elastio Can Help You
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About This Analysis
This Styx 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 Styx.
Last updated: July 30, 2025