Ransomware Research
CrptXXX Ransomware
CrptXXX is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CrptXXX
- First Seen
- March 1, 2017
How CrptXXX Ransomware Works
Targeted Files
Requires connection with C&C in TOR
File Encryption Patterns
CrptXXX modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..crptxxxRansom Note and Payment Demands
After encrypting files, CrptXXX displays ransom notes demanding payment for file recovery:
HOW_TO_FIX_!.txtRansom message:
notes/HOW_TO_FIX_!.txt
decrypt.txtRansom message:
notes/decrypt.txt
Note locations:
DesktopREADME.txtHOW_TO_DECRYPT.txtTechnical Indicators
Associated Executable Files
The following executable files are associated with CrptXXX ransomware:
binz.exe
Elastio Can Help You
Don't let CrptXXX ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This CrptXXX 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 CrptXXX.
Last updated: July 30, 2025