Ransomware Research
CryptoMix-DLL Ransomware
CryptoMix-DLL 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. Security researchers also track this malware under the aliases: DLLCryptoMix.
Quick Facts
- Ransomware Family
- CryptoMix-DLL
- First Seen
- April 1, 2019
- Known Aliases
- DLLCryptoMix
How CryptoMix-DLL Ransomware Works
Targeted Files
Transforms (encrypts) encrypted filenames -> F676918627A5827A8ADE87262AA36616.DLL
File Encryption Patterns
CryptoMix-DLL modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..DLLRansom Note and Payment Demands
After encrypting files, CryptoMix-DLL displays ransom notes demanding payment for file recovery:
_HELP_INSTRUCTION.TXTRansom message:
notes/_HELP_INSTRUCTION.TXT
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with CryptoMix-DLL ransomware:
DLL.exedll.exe
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About This Analysis
This CryptoMix-DLL 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 CryptoMix-DLL.
Last updated: July 30, 2025