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