Ransomware Research
KoreanLocker Ransomware
KoreanLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- KoreanLocker
- First Seen
- January 1, 2018
How KoreanLocker Ransomware Works
File Encryption Patterns
KoreanLocker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..lockedRansom Note and Payment Demands
After encrypting files, KoreanLocker displays ransom notes demanding payment for file recovery:
README.txtRansom message:
notes/README.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with KoreanLocker ransomware:
hidden-tear.exeKoreanLocker.exe
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About This Analysis
This KoreanLocker 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 KoreanLocker.
Last updated: July 30, 2025