PClock4 Ransomware
PClock4 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2016, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: PClock4, SysGop.
Quick facts
Ransom note and payment demands
After encrypting files, PClock4 displays ransom notes demanding payment for file recovery:
notes/Your files are locked !!!!.txt
Technical indicators
Associated executable files
The following executable files are associated with PClock4 ransomware:
- sysgop.exe
- tmp9602.exe
About this analysis
This PClock4 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 PClock4.
Last updated: December 30, 2025
Elastio detects PClock4 inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify PClock4 across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.
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