Ransomware Research
Relock Ransomware
Relock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Relock
- First Seen
- August 1, 2019
How Relock Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Relock modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[0-9]{8}$/Ransom Note and Payment Demands
After encrypting files, Relock displays ransom notes demanding payment for file recovery:
FIX_Instructions.txtRansom message:
notes/FIX_Instructions.txt
FIX_Instructions.htaElastio Can Help You
Don't let Relock ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This Relock 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 Relock.
Last updated: July 30, 2025