Ransomware Research
HackdoorCrypt3r Ransomware
HackdoorCrypt3r is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- HackdoorCrypt3r
- First Seen
- July 1, 2019
How HackdoorCrypt3r Ransomware Works
Targeted Files
Requires C&C to work
File Encryption Patterns
HackdoorCrypt3r modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..hackdoorRansom Note and Payment Demands
After encrypting files, HackdoorCrypt3r displays ransom notes demanding payment for file recovery:
!how_to_unlock_your_file.txtRansom message:
notes/!how_to_unlock_your_file.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with HackdoorCrypt3r ransomware:
WindowsFormsApp2.exed.bin
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About This Analysis
This HackdoorCrypt3r 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 HackdoorCrypt3r.
Last updated: July 30, 2025