Ransomware Research
PassLock Ransomware
PassLock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- PassLock
- First Seen
- February 1, 2020
How PassLock Ransomware Works
File Encryption Patterns
PassLock modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encryptedRansom Note and Payment Demands
After encrypting files, PassLock displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletionTechnical Indicators
Associated Executable Files
The following executable files are associated with PassLock ransomware:
PassLock.exe
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About This Analysis
This PassLock 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 PassLock.
Last updated: July 30, 2025