Here is a short story inspired by that "suspicious executable" vibe: The Ghost in the Server Rack
If you like solving these kinds of "digital mysteries," platforms like TryHackMe offer scenarios where you investigate compromised hosts and hunt for suspicious executables in memory. RLAN PASSADMIN.exe
If you’re interested in real-world "horror" stories from the IT world: Here is a short story inspired by that
Suddenly, the motion-sensor lights in the empty hallway of Sector 4 clicked on, one by one, trailing away into the darkness. Leo realized the "PASSADMIN" wasn't for passwords—it was a guest list for something that had never truly left the network. one by one