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notes/note.txt
Location: OnceOnCompletion
Ransomware Research
WinLock Ransomware
WinLock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2026, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- WinLock
- First Seen
- May 1, 2026
How WinLock ransomware works
File modification behavior
WinLock updates file modification timestamps after encryption.
File encryption patterns
WinLock modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .locked
Ransom note and payment demands
After encrypting files, WinLock displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with WinLock ransomware:
- WinLockRansomware.exe
- 0f609298-36d7-44b3-87ad-56c1d6593659.exe
- 81d2919a-92ad-4822-9469-1a8369161377.exe
- iubz9.exe
About this analysis
This WinLock ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like WinLock.
Detection coverage
Elastio detects WinLock inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify WinLock across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.