Cuba Ransomware
Cuba is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick facts
How Cuba ransomware works
File encryption patterns
Cuba modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Cuba displays ransom notes demanding payment for file recovery:
notes/!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT
notes/!!FAQ for Decryption!!.txt
notes/!! READ ME !!.txt
Technical indicators
Associated executable files
The following executable files are associated with Cuba ransomware:
- listdrop
- listdrop.exe
- ITCGroup.exe
- 438419.exe
- CC.exe
- kalt.exe
- test.exe
- cuba.exe
- 483560.exe
- cuba fidel Ransomware.exe
- 1.exe
About this analysis
This Cuba 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 Cuba.
Last updated: December 30, 2025
Elastio detects Cuba inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Cuba 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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