Ransomware Research
Ironcat Ransomware
Ironcat is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Ironcat
- First Seen
- September 1, 2020
How Ironcat Ransomware Works
Targeted Files
Written in Go https://aaronrosenmund.com/blog/2020/09/26/ironcat-ransmoware/ Need params to start -> encrypt password
File Encryption Patterns
Ironcat modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encryptedRansom Note and Payment Demands
After encrypting files, Ironcat displays ransom notes demanding payment for file recovery:
pay_the_piper.txtRansom message:
notes/pay_the_piper.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with Ironcat ransomware:
iai-users.exeRansomware REvil Sodinokibi.exe
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About This Analysis
This Ironcat 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 Ironcat.
Last updated: July 30, 2025