Avast detecting virus, what do I do?

[Toad]

When I run my PC for a few hours, I notice the powershell.exe icon pops up on my taskbar for a few seconds then goes away. Shortly after, I get this: http://imgur.com/a/LxnDM

 

I have Avast, Malwarebytes, and Spybot, none of which are detecting it, but Avast keeps marking it when it runs. I read online it's a needed microsoft thing, and no one else is having this type of issue, which is strange. It's been persisting for a few months now.

 

What do I do?

[fluffyy]

Add it to your exceptions and hope your sources are correct

[xxBonsai99xx]

Looks like you may have malware on your computer trying to download this file...

 

https://www.virustotal.com/en/file/74f7dc47a374a3b8e3760ba30c7718002b8f2e3d954f35bbd0dbd27959e6369e/analysis/1494090695/

 

Give HitmanPro a try:

 

https://www.hitmanpro.com/en-us/hmp.aspx

[iStruggle to Run it on Mac]

Comodo has some instructions on how to get rid of it and what it is : https://file-intelligence.comodo.com/windows-process-virus-malware/exe/powershell

[Toad]

Ran the Comodo scan as instructed, it found nothing. 

[iStruggle to Run it on Mac]

Have you ever tried killing the process and deleting the malicious power shell file which should be the one with the most recent date on the Date modified tab?

[K1ng]

Try following this guide: https://www.reddit.com/r/techsupport/comments/33evdi/suggested_reading_official_malware_removal_guide/?st=j2gw1zky&sh=c3d9b712

 

You probably have gone through some of the steps shown there already, but it's worth checking the others.