If you have vSphere Essential Plus and later edition, you should be able to download NSX for vShield Endpoint
You can use the NSX limited features if you only need the Trend Micro Antivirus/anti-malware so when deploying NSX, you do not need other NSX features the VXLAN, Distributed Firewall, Edge Gateway, etc which comes with the paid NSX licenses.
FYI, see this KB FAQ: Implementation of vShield Endpoint beyond EOA of vCNS (2110078) | VMware KB https://kb.vmware.c...
"With the release of NSX 6.2.4, if you purchased vSphere with vShield Endpoint (Essential Plus and later), you can download NSX.
This means that NSX will appear on the vSphere download site, similar to vCNS.
The End of General Support for vCloud Networking and Security Manager version 5.5 is September 19, 2016"
Bayu Wibowo | VCIX6-DCV/NV
Author of VMware NSX Cookbook http://bit.ly/NSXCookbook
https://github.com/bayupw/PowerNSX-Scripts
https://nz.linkedin.com/in/bayupw | twitter @bayupw