Ransomware Research

CryptorBit Ransomware

CryptorBit is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2013, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
CryptorBit
First Seen
December 1, 2013

How CryptorBit Ransomware Works

Ransom Note and Payment Demands

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

fileHowDecrypt.txt

Ransom message:

notes/HowDecrypt.txt

Technical Indicators

Associated Executable Files

The following executable files are associated with CryptorBit ransomware:

  • QMEsa Analyzator
  • 88345.exe
  • fiwo.exe
  • a.exe
  • phba.exe
  • yxte.exe
  • ekjxn.exe
  • xouwr.exe

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About This Analysis

This CryptorBit 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 CryptorBit.

Last updated: October 30, 2025

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What is CryptorBit Ransomware? | Elastio