Ransomware Research

SyncCrypt Ransomware

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

Quick Facts

Ransomware Family
SyncCrypt
First Seen
August 1, 2017

How SyncCrypt Ransomware Works

Targeted Files

Should start from Temp\BackupClient\sync.exe -e c:\Users\qq\Desktop\ https://www.bleepingcomputer.com/news/security/synccrypt-ransomware-hides-inside-jpg-files-appends-kk-extension/

File Encryption Patterns

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

File extensions added after encryption:

..kk

Ransom Note and Payment Demands

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

filereadme.html

Ransom message:

notes/readme.html

Note locations:

Desktop
filereadme.png

Ransom message:

notes/readme.png

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with SyncCrypt ransomware:

  • SyncCrypt_Mal_WSF.wsf
  • CourtOrder_845493809.wsf
  • sync.exe
  • 003_JPG.arrival.jpg
  • 1503965176-arrival.jpg
  • X8IOl.jpg
  • arrival.jpg
  • SyncCrypt_Mal_JPG.jpg
  • arriaval.jpg

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About This Analysis

This SyncCrypt 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 SyncCrypt.

Last updated: July 30, 2025

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