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 modification behavior

Tunca updates file modification timestamps after encryption.

File encryption patterns

Tunca modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
  • .tunca

Ransom note and payment demands

After encrypting files, Tunca displays ransom notes demanding payment for file recovery:

message
notes/note.txt

Location: OnceOnCompletion

Technical indicators

Associated executable files

The following executable files are associated with Tunca ransomware:

  • Windows.exe

About this analysis

This Tunca 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 Tunca.

Last updated: February 14, 2023

Detection coverage

Elastio detects Tunca inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Tunca across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.