Yes, that is possible.
We recommend the following plugin only if you wish to hide the fact that your website was built using WordPress rather than for its security benefits since Strattic customers already benefit from the highest level of security.
WP-Hide works well with Strattic and is an easy way to completely hide your WordPress core files, theme and plugins paths.
There are many settings and options in this plugin, so it is recommended to test it thoroughly using your preview environment before making any changes live.