We have been deploying SplashtopSOS to our systems, by creating a script that does the following: 1- Creates a directory here: C:\SplashtopSOS. 2- Copies the SplashtopSOS.exe into the directory, and 3- Creates a shortcut to SplashtopSOS.exe here: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\SplashtopSOS\. Having SplashtopSOS already on our target machines makes it easier for our end users to locate the executable, and launch it when needed. Additionally, including this in the catalog means it will always be up to date and ready for pushing out the updated version of the executable.
Unfortunately, we only support EXE and MSI installers at this time. This file appears to be a portable executable file and not an installer. As a result, it can be copied anywhere and does not create an ARP (Add/Remove Programs) entry, which is required for our current detection methods. As a workaround, you could repackage it as an MSI and deploy it using Custom Apps.