AnalysisW32/ZxShell.S!tr.rkit is classified as a rootkit trojan.
A rootkit trojan is a type of malware that has privileged access on the computer. It is usually a device driver program that is designed to hide the existence of other malware on the infected system.
The Fortinet Antivirus Analyst Team is constantly updating our descriptions. Please check the FortiGuard Encyclopedia regularly for updates.
- Make sure that your FortiGate/FortiClient system is using the latest AV database.
- Quarantine/delete files that are detected and replace infected files with clean backup copies.