Ransomware Research
RensenWare Ransomware
RensenWare is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- RensenWare
- First Seen
- April 1, 2017
How RensenWare Ransomware Works
File Encryption Patterns
RensenWare modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..RENSENWARE..Haruna..KASHIMARansom Note and Payment Demands
After encrypting files, RensenWare 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 RensenWare ransomware:
Rensenware.exerensenWare.exeTrojan.Ransom.RensenwareRensen.exerensenware.exe1kkUiAnQvSWUv2.exeTrojan.Ransom.Rensenware.exeRensenWare.exeTrojan.Ransom.RensenWare.exeXDDWDx.exeXDDWDx.exe.exeRansomware HiddenTears.exe684.jsonqae8v0xd7s2iDQ.exeTda0xbFhlh9afR.exemyfile.exeRensenwareGame.exewefe.binESZHSKiBransomware RensenWare
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About This Analysis
This RensenWare 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 RensenWare.
Last updated: July 30, 2025