Ransomware Research
DennisTheHitman Ransomware
DennisTheHitman is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2024, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- DennisTheHitman
- First Seen
- September 1, 2024
How DennisTheHitman Ransomware Works
File Encryption Patterns
DennisTheHitman modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..247_dennisthehitmanRansom Note and Payment Demands
After encrypting files, DennisTheHitman displays ransom notes demanding payment for file recovery:
how_to_back_files.htmlRansom message:
notes/how_to_back_files.html
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with DennisTheHitman ransomware:
247_dennisthehitman.exe
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About This Analysis
This DennisTheHitman 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 DennisTheHitman.
Last updated: July 30, 2025