Ransomware Research

WannaSmile Ransomware

WannaSmile 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
WannaSmile
First Seen
November 1, 2017

How WannaSmile Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..WSmile..wannasmile

Ransom Note and Payment Demands

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

fileHow to decrypt files.html

Ransom message:

notes/How to decrypt files.html

Note locations:

RootDiscsDesktop
message

Ransom message:

notes/note.txt

Note locations:

Login

Technical Indicators

Associated Executable Files

The following executable files are associated with WannaSmile ransomware:

  • WannaSmile.exe
  • Trojan.Ransom.WannaSmile.exe
  • client.exe
  • Local Security Authority.exe
  • manager.exe

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About This Analysis

This WannaSmile 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 WannaSmile.

Last updated: October 30, 2025

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