Ransomware Research
Monti Ransomware
Monti is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2022, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Monti
- First Seen
- December 1, 2022
How Monti Ransomware Works
Targeted Files
For VMware ESXi servers https://elfdigest.com/brief/edfe81babf50c2506853fd8375f1be0b7bebbefb2e5e9a33eff95ec23e867de1 https://www.bleepingcomputer.com/news/security/new-redalert-ransomware-targets-windows-linux-vmware-esxi-servers/
File Encryption Patterns
Monti modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..puuukRansom Note and Payment Demands
After encrypting files, Monti displays ransom notes demanding payment for file recovery:
readme.txtRansom message:
notes/readme.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with Monti ransomware:
eelocker
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About This Analysis
This Monti 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 Monti.
Last updated: July 30, 2025