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Ransomware Research
CoNFicker Ransomware
CoNFicker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CoNFicker
- First Seen
- April 1, 2017
How CoNFicker Ransomware Works
Targeted Files
Destroys files
File Encryption Patterns
CoNFicker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..conficker
Ransom Note and Payment Demands
After encrypting files, CoNFicker displays ransom notes demanding payment for file recovery:
Decrypt.txt
Ransom message:
notes/Decrypt.txt
Note locations:
Desktop
Ransom message:
notes/img.jpg
Note locations:
Desktop
Technical Indicators
Associated Executable Files
The following executable files are associated with CoNFicker ransomware:
conficker ransomwarefineched.exe
winrar setup 2017.exe
Elastio Can Help You
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About This Analysis
This CoNFicker 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 CoNFicker.
Last updated: July 30, 2025