Ransomware Research
KratosCrypt Ransomware
KratosCrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- KratosCrypt
- First Seen
- June 1, 2016
How KratosCrypt Ransomware Works
Targeted Files
NOSAMPLE https://www.bleepingcomputer.com/forums/t/618077/kratoscrypt-help-support-topic-kratos-readme-allhtml/
File Encryption Patterns
KratosCrypt modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..kratosRansom Note and Payment Demands
After encrypting files, KratosCrypt displays ransom notes demanding payment for file recovery:
README_ALL.htmlRansom message:
notes/README_ALL.html
Note locations:
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About This Analysis
This KratosCrypt 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 KratosCrypt.
Last updated: July 30, 2025