Avast found High Threat:Rootkit Hidden File but won't delete it.

Viruses and worms
1

I tried to delete and Avast Action says “Action postponed…”. I can’t read the rest. What do I do?vKWEGv

2

Attach your basic diagnostic logs. (MBAM, FRST and aswMBR)
Instructions: https://forum.avast.com/index.php?topic=53253.0