Ransomware Research
SadComputer Ransomware
SadComputer is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- SadComputer
- First Seen
- April 1, 2019
How SadComputer Ransomware Works
File Encryption Patterns
SadComputer modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..sadRansom Note and Payment Demands
After encrypting files, SadComputer displays ransom notes demanding payment for file recovery:
sadcomputer_note.txtRansom message:
notes/sadcomputer_note.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with SadComputer ransomware:
SadComputer.exe
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About This Analysis
This SadComputer 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 SadComputer.
Last updated: July 30, 2025