Ransomware Research
AstraLocker Ransomware
AstraLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2021, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- AstraLocker
- First Seen
- August 1, 2021
How AstraLocker Ransomware Works
File Encryption Patterns
AstraLocker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[0-9a-z]{4}$/Ransom Note and Payment Demands
After encrypting files, AstraLocker displays ransom notes demanding payment for file recovery:
Recover_Files.txtRansom message:
notes/Recover_Files.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with AstraLocker ransomware:
Astra.exeSystem64.exe
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About This Analysis
This AstraLocker 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 AstraLocker.
Last updated: July 30, 2025