Ransomware Research

Exitium Ransomware

Exitium is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2026, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Exitium
First Seen
March 1, 2026

How Exitium ransomware works

File modification behavior

Exitium updates file modification timestamps after encryption.

File encryption patterns

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

Extensions added after encryption
  • .exitium

Ransom note and payment demands

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

fileYOU ARE UNDER ATTACK!.html
notes/YOU ARE UNDER ATTACK!.html

Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Exitium ransomware:

  • Ransom.exe

About this analysis

This Exitium ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Exitium.

Last updated: June 25, 2026

Detection coverage

Elastio detects Exitium inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Exitium across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.