Ransomware Research
Sepsis Ransomware
Sepsis is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Sepsis
- First Seen
- May 1, 2018
How Sepsis Ransomware Works
Targeted Files
Full extension -> .[Sepsis@protonmail.com].SEPSIS
File Encryption Patterns
Sepsis modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..SEPSIS
Ransom Note and Payment Demands
After encrypting files, Sepsis displays ransom notes demanding payment for file recovery:
Info.hta
Ransom message:
notes/Info.hta
Note locations:
StartUp
Technical Indicators
Associated Executable Files
The following executable files are associated with Sepsis ransomware:
svchost.exe
myfile.exe
Sepsis_Ransomware.exe
Sepsis_Ransomware.bin
Elastio Can Help You
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About This Analysis
This Sepsis 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 Sepsis.
Last updated: July 30, 2025