Ransomware Research
Tunca Ransomware
Tunca is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: KGDecrypt.
Quick Facts
- Ransomware Family
- Tunca
- First Seen
- December 1, 2018
- Known Aliases
- KGDecrypt
How Tunca Ransomware Works
File Encryption Patterns
Tunca modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..tuncaRansom Note and Payment Demands
After encrypting files, Tunca 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 Tunca ransomware:
Windows.exe
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About This Analysis
This Tunca 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 Tunca.
Last updated: July 30, 2025