Answer:
To build an indicator to trigger when the file lusrmgr.msc is found, I would need to first determine the file path and SHA1 hash value associated with it. On most Windows machines, the file should be located in C:\Windows\System32\lusrmgr.msc. The SHA1 hash value can be determined by using a tool such as HashMyFiles. Once I have obtained the file path and SHA1 hash value, I can create an indicator within my system that will alert me if this file is detected.