Ransomware Research

IRIS Ransomware

IRIS is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2024, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
IRIS
First Seen
April 1, 2024

How IRIS Ransomware Works

Targeted Files

e1c7acb3c47839cf78ca682222ab2eaa162b5c7faf14572f018055611adb20c6 -> doesn't change filenames

File Encryption Patterns

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

File extensions added after encryption:

./\.[0-9a-z]{4}$/

Ransom Note and Payment Demands

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

fileread_it.txt

Ransom message:

notes/read_it.txt

Note locations:

EveryFolder
fileREAD-ME.txt

Ransom message:

notes/READ-ME.txt

Note locations:

Desktop
screenshot

Ransom message:

notes/w7zuxr8ni.jpg

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with IRIS ransomware:

  • MainRunnerqwa.exe
  • MAINRU~2.EXE
  • svchost.exe

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About This Analysis

This IRIS 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 IRIS.

Last updated: July 30, 2025

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What is IRIS Ransomware? | Elastio