Ransomware Research
SD Ransomware
SD is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: SD 1.1-1.2, NewSource, Unlock11.
Quick Facts
- Ransomware Family
- SD
- First Seen
- June 1, 2019
- Known Aliases
- SD 1.1-1.2NewSourceUnlock11
How SD Ransomware Works
File Encryption Patterns
SD modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..enc..fsocietyRansom Note and Payment Demands
After encrypting files, SD displays ransom notes demanding payment for file recovery:
ReadMeToDecrypte.txtRansom message:
notes/ReadMeToDecrypte.txt
Note locations:
DesktopDecrypt Your Files.txtRansom message:
notes/Decrypt Your Files.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with SD ransomware:
NewSource.exe
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About This Analysis
This SD 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 SD.
Last updated: September 30, 2025
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