Ransomware Research

Udacha Ransomware

Udacha is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2021, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Udacha
First Seen
September 1, 2021

How Udacha Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..udacha

Ransom Note and Payment Demands

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

fileReadMe_Instruction.mht

Ransom message:

notes/ReadMe_Instruction.mht

Note locations:

RootDiscsDesktop

Technical Indicators

Associated Executable Files

The following executable files are associated with Udacha ransomware:

  • dImCfXt
  • xIx
  • mIbOcEb
  • 17B7.exe
  • fHoNw
  • mNnKrEwH
  • E6C5.exe

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About This Analysis

This Udacha 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 Udacha.

Last updated: July 30, 2025

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Udacha Ransomware - Detectable by Elastio