Ransomware Research

xCor Ransomware

xCor is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2023, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
xCor
First Seen
May 1, 2023

How xCor Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..xCor

Ransom Note and Payment Demands

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

fileinfo.txt

Ransom message:

notes/info.txt

Note locations:

RootDiscs
fileInfo.hta

Ransom message:

notes/Info.hta

Note locations:

StartUpRoaming

Technical Indicators

Associated Executable Files

The following executable files are associated with xCor ransomware:

  • payload.exe

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About This Analysis

This xCor 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 xCor.

Last updated: October 30, 2025

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