MonaLisa Ransomware
MonaLisa is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2022, this ransomware has been actively targeting systems worldwide.
Quick facts
How MonaLisa ransomware works
File encryption patterns
MonaLisa modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, MonaLisa displays ransom notes demanding payment for file recovery:
notes/info.txt
notes/info.hta
Technical indicators
Associated executable files
The following executable files are associated with MonaLisa ransomware:
- 3.exe
- 4.exe
- setup_55612.exe
About this analysis
This MonaLisa ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like MonaLisa.
Last updated: December 30, 2025
Elastio detects MonaLisa inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify MonaLisa across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.
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