For the file 747D9CF3-170B-4097-A847-D75876F01A8C.ps1 -- it's loading the contents of the item jOlV24T860 in the registry key HKLM:\SOFTWARE\ClassesSNupol2 into a script block and then using Invoke-Command to run that script block.
For the file A733.tmp.ps1 -- it's loading the contents of the item o33ua6Qj4Yx in the registry key HKLM:\SOFTWARE\RealtekEmrmYFlO into a script block, and the using Invoke-Command to run that script block.
So . . . what's in those registry items???
Keep in mind that the registry key and item names may vary from execution to execution. However, I don't think I've ever seen a HKLM:\SOFTWARE\ClassesSNupol2 registry key before (or one like it). There surely is a HKLM:\SOFTWARE\Classes, though.
That all looks might strange to me.