Ransomware Research

JosepCrypt Ransomware

JosepCrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2018, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
JosepCrypt
First Seen
May 1, 2018

How JosepCrypt Ransomware Works

Targeted Files

Encrypts first 1024 kb

File Encryption Patterns

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

File extensions added after encryption:

..josep..karne

Ransom Note and Payment Demands

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

fileRECOVERY.txt

Ransom message:

notes/RECOVERY.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with JosepCrypt ransomware:

  • JoseptCrypt.exe
  • JosepCrypt.exe
  • drweb32.exe
  • JosepCrypt Ransomware.exe

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About This Analysis

This JosepCrypt 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 JosepCrypt.

Last updated: July 30, 2025

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