Ransomware Research
Sardoninir Ransomware
Sardoninir is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Sardoninir
- First Seen
- February 1, 2017
How Sardoninir Ransomware Works
File Encryption Patterns
Sardoninir modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encRansom Note and Payment Demands
After encrypting files, Sardoninir displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with Sardoninir ransomware:
7zS.sfx.exeInvoice.exe
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About This Analysis
This Sardoninir 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 Sardoninir.
Last updated: July 30, 2025