Ransomware Research
CryptoMix-SERVER Ransomware
CryptoMix-SERVER is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: SERVER Cryptomix.
Quick Facts
- Ransomware Family
- CryptoMix-SERVER
- First Seen
- December 1, 2017
- Known Aliases
- SERVER Cryptomix
How CryptoMix-SERVER Ransomware Works
File Encryption Patterns
CryptoMix-SERVER modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..SERVERRansom Note and Payment Demands
After encrypting files, CryptoMix-SERVER 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-SERVER ransomware:
BC3C3CB7E8.exe
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About This Analysis
This CryptoMix-SERVER 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-SERVER.
Last updated: July 30, 2025