KCTF Locker Ransomware
KCTF Locker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick facts
How KCTF Locker ransomware works
File encryption patterns
KCTF Locker modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, KCTF Locker displays ransom notes demanding payment for file recovery:
notes/note.txt
Technical indicators
Associated executable files
The following executable files are associated with KCTF Locker ransomware:
- Ransomware.exe
About this analysis
This KCTF Locker 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 KCTF Locker.
Last updated: December 30, 2025
Elastio detects KCTF Locker inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify KCTF Locker 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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