Ransomware Research
DriedSister Ransomware
DriedSister is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- DriedSister
- First Seen
- February 1, 2018
How DriedSister Ransomware Works
File Encryption Patterns
DriedSister modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..下物妹!Ransom Note and Payment Demands
After encrypting files, DriedSister displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletionTechnical Indicators
Associated Executable Files
The following executable files are associated with DriedSister ransomware:
Ransom.exeUmaru.exe
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About This Analysis
This DriedSister 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 DriedSister.
Last updated: July 30, 2025