Ransomware Research
Z3 Ransomware
Z3 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Z3enc.
Quick Facts
- Ransomware Family
- Z3
- First Seen
- August 1, 2020
- Known Aliases
- Z3enc
How Z3 Ransomware Works
Targeted Files
Current sample looks like "test" variant. Encrypts only "Sandbox" folder on the Desktop
Ransom Note and Payment Demands
After encrypting files, Z3 displays ransom notes demanding payment for file recovery:
{origin_filename}.z3encRansom message:
notes/DOC3.docx.z3enc
Note locations:
EveryFileRansom message:
notes/note.txt
Note locations:
LoginTechnical Indicators
Associated Executable Files
The following executable files are associated with Z3 ransomware:
z3.exe5fv5sgbg.mhk.exe
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About This Analysis
This Z3 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 Z3.
Last updated: July 30, 2025