Ransomware Research

I9L Ransomware

I9L is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
I9L
First Seen
June 1, 2025

How I9L Ransomware Works

File Encryption Patterns

I9L modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..i9l

Ransom Note and Payment Demands

After encrypting files, I9L displays ransom notes demanding payment for file recovery:

file#Restore-My-Files.txt

Ransom message:

notes/#Restore-My-Files.txt

Note locations:

EveryFolder
screenshot

Ransom message:

notes/Eclipse.png

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with I9L ransomware:

  • 7766.exe
  • 111.exe
  • Encryptor.exe

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About This Analysis

This I9L 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 I9L.

Last updated: October 30, 2025

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