How to check why a file was opened?

Hi,

Today at 11:10:22 one of my disks were spin up.

Apr 21 11:10:22 Sowia emhttpd: read SMART /dev/sdb

In file activity plugin i saw this:

Apr 21 11:10:22 OPEN => /mnt/disk1/Sowia/Marcin/Pobrane/TestMem5v0.1/TM5.exe
Apr 21 11:10:25 OPEN => /mnt/disk1/Sowia/Marcin/Pobrane/TestMem5v0.1/TM5.exe
Apr 21 11:10:25 OPEN => /mnt/disk1/Sowia/Marcin/Pobrane/TestMem5v0.1/TM5.exe

So the disk spin up to read this file. The "Downloads" folder serves the same function for me as the downloads folder in Windows, meaning I put downloaded files there. The file is simply a memtest installation file. I have absolutely no idea why this file was read.

Is there a way to check and trace why Unraid needed that particular file?