Ransomware Research
TheDMR Ransomware
TheDMR is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: DMR64, Clown, NotFound, Clown+, Valley, ALVIN.
Quick Facts
- Ransomware Family
- TheDMR
- First Seen
- December 1, 2019
- Known Aliases
- DMR64ClownNotFoundClown+ValleyALVIN
How TheDMR Ransomware Works
Targeted Files
Encrypts first 0x16010 bytes {mail}{id=XXXXXXXX}{original filename}{rans extension} Ex -> "[rimon.argan@gmail.com][id=XXXXXXXX]file001.jpg.ALVIN" https://www.bleepingcomputer.com/forums/t/734032/alvin-ransomware/ 98f25a227b111870d3a2469ad88992047c9a4b0ec4205ede7bdbcbe5a5b8236f -> requires C&C
File Encryption Patterns
TheDMR modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..DMR64
..notfound
..clown+
..clown
..Valley
..ALVIN
Ransom Note and Payment Demands
After encrypting files, TheDMR displays ransom notes demanding payment for file recovery:
!!! READ THIS !!!.hta
Ransom message:
notes/!!! READ THIS !!!.hta
Note locations:
EveryFolder
HOW TO RECOVER ENCRYPTED FILES.txt
Ransom message:
notes/HOW TO RECOVER ENCRYPTED FILES.txt
Note locations:
EveryFolder
Technical Indicators
Associated Executable Files
The following executable files are associated with TheDMR ransomware:
TheDMR.bin
Windows Explorer.exe
NotFound.exe
Synaptics.exe
Heeeh98.exe
Heeeh98.exe (Synaptics.exe)
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About This Analysis
This TheDMR 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 TheDMR.
Last updated: July 30, 2025