Ransomware Research
Windows_Security Ransomware
Windows_Security is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2016, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: WS Go.
Quick Facts
- Ransomware Family
- Windows_Security
- First Seen
- October 1, 2016
- Known Aliases
- WS Go
How Windows_Security Ransomware Works
Targeted Files
Encodes filenames with base64 -> samplepptx.pptx -> c2FtcGxlcHB0eC5wcHR4.enc
File Encryption Patterns
Windows_Security modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encRansom Note and Payment Demands
After encrypting files, Windows_Security displays ransom notes demanding payment for file recovery:
Instructions.htmlRansom message:
notes/Instructions.html
Technical Indicators
Associated Executable Files
The following executable files are associated with Windows_Security ransomware:
attribATTRIB.EXEWindows_Security.exe_Priv.exe111.exeprivescalation_original.exe
Elastio Can Help You
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About This Analysis
This Windows_Security 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 Windows_Security.
Last updated: July 30, 2025