There are two separate Program Files folders as you listed, but there is no C:\Program Files\EsetOnlineScanner. There is only C:\Program Files (x86)\ESET\ESET Online Scanner.

I'm running ESET again to see if I can find a log this time. It's at 98% right now. The same trojan is being detected: "probably a variant of Win32/Olmarik.AVQ trojan".