Ransomware Research
StrawHat Ransomware
StrawHat 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
- StrawHat
- First Seen
- August 1, 2017
How StrawHat Ransomware Works
Targeted Files
Only renames files; ex -> "Biblio.1dd0vadnqti" Removes original extension Requires Microsoft.VisualBasic.PowerPacks.Vs.dll Encrypts only "c:\test" folder
File Encryption Patterns
StrawHat modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[a-z0-9]{11}$/Ransom Note and Payment Demands
After encrypting files, StrawHat displays ransom notes demanding payment for file recovery:
YOUR_FILES_ARE_ENCRYPTED.htmlRansom message:
notes/YOUR_FILES_ARE_ENCRYPTED.html
YOUR_FILES_ARE_ENCRYPTED.txtRansom message:
notes/YOUR_FILES_ARE_ENCRYPTED.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with StrawHat ransomware:
StrawHat PDF.exeRechnung 201708.pdf.exe
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About This Analysis
This StrawHat 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 StrawHat.
Last updated: July 30, 2025