Ransomware Research
CryptoRoger Ransomware
CryptoRoger 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
- CryptoRoger
- First Seen
- June 1, 2016
How CryptoRoger Ransomware Works
Targeted Files
https://www.bleepingcomputer.com/news/security/new-ransomware-called-cryptoroger-that-appends-crptrgr-to-encrypted-files/ https://www.bleepingcomputer.com/forums/t/617881/cryptoroger-ransomware-help-support-topic-where-are-my-fileshtml-crptrgr/
File Encryption Patterns
CryptoRoger modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..crptrgrRansom Note and Payment Demands
After encrypting files, CryptoRoger displays ransom notes demanding payment for file recovery:
!Where_are_my_files!.htmlRansom message:
notes/!Where_are_my_files!.html
Note locations:
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About This Analysis
This CryptoRoger 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 CryptoRoger.
Last updated: July 30, 2025