Ransomware Research
Wanacry Ransomware
Wanacry is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2021, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Wanacry
- First Seen
- October 1, 2021
How Wanacry Ransomware Works
File Encryption Patterns
Wanacry modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..wanacryRansom Note and Payment Demands
After encrypting files, Wanacry displays ransom notes demanding payment for file recovery:
HELP_DECRYPT_YOUR_FILES.txtRansom message:
notes/HELP_DECRYPT_YOUR_FILES.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with Wanacry ransomware:
Host Process for Windows Services.exesoftware.exe
Elastio Can Help You
Don't let Wanacry ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This Wanacry 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 Wanacry.
Last updated: September 30, 2025
Recent Ransomware
Explore other threats in our database