Ransomware Research
AAC Ransomware
AAC is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- AAC
- First Seen
- July 1, 2017
How AAC Ransomware Works
File Encryption Patterns
AAC modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..aacRansom Note and Payment Demands
After encrypting files, AAC displays ransom notes demanding payment for file recovery:
Learn how to recover your files.txtRansom message:
notes/Learn how to recover your files.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with AAC ransomware:
invoice.pdf.exe8.bin12.binsvchost.exe
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About This Analysis
This AAC 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 AAC.
Last updated: July 30, 2025