Ransomware Research
KEKW Ransomware
KEKW is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: KEKW-Locker.
Quick Facts
- Ransomware Family
- KEKW
- First Seen
- March 1, 2020
- Known Aliases
- KEKW-Locker
How KEKW Ransomware Works
Targeted Files
Fake encrypt (all files overwritten with 16 bytes)
File Encryption Patterns
KEKW modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..KEKWRansom Note and Payment Demands
After encrypting files, KEKW displays ransom notes demanding payment for file recovery:
Decrypt.txtRansom message:
notes/Decrypt.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with KEKW ransomware:
kekw.exe
Elastio Can Help You
Don't let KEKW ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This KEKW 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 KEKW.
Last updated: July 30, 2025