Ransomware Research

jCandy Ransomware

jCandy is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
jCandy
First Seen
November 1, 2017

How jCandy Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..locked-jCandy

Ransom Note and Payment Demands

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

fileJCANDY_INSTRUCTIONS.txt

Ransom message:

notes/JCANDY_INSTRUCTIONS.txt

Note locations:

Desktop
fileREAD_ME.txt

Ransom message:

notes/READ_ME.txt

Note locations:

Desktop
message

Ransom message:

notes/note.txt

Note locations:

OnceOnCompletion

Technical Indicators

Associated Executable Files

The following executable files are associated with jCandy ransomware:

  • jCandy Ransomeware.exe
  • JCANDY RANSOMWARE
  • jCandy Ransomeware2

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About This Analysis

This jCandy 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 jCandy.

Last updated: October 30, 2025

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