According to Symantec:
How do I get IT Analytics?
IT Analytics is provided free of charge however a license key and the MSI is needed before you can install ITA.. If you have Symantec Endpoint Protection in your environment the MSI for performing the installation is located on the Tools portion of the media. However if you are not a SEP customer, please contact either your Symantec Account Manager or Bay Dynamics. NOTE: MY company (ITS Partners) can help you obtain the license
https://www-secure.symantec.com/connect/articles/if-you-are-using-symantec-dlp-you-should-be-using-it-analytics
and
https://www-secure.symantec.com/connect/articles/it-analytics-71-faq-and-resources
Regards.