rundll32.exe high network usage, should I get worried?

[cloudropis]

I was playing games with a friend online and I started lagging heavily. We started the usual routine of alt-tabbing and checking our task manager to see whose fault it was and I noticed rundll32 (location: /Windows/system32, on W8.1) was at high disk and network usage. Things stabilized after a while but it still was sketchy, especially because I just rebooted my PC beforehand and it took slightly longer to do so and a weird process popped out for a second.

I checked the filepath of rundll32 and it has a weird icon I've never seen before: https/i.imgur.com/iTQvoJJ.png . Am I under risk the genuine process got hijacked?

For whatever it's worth I think my protection is pretty good, I use javascript managers and adblocker on most sites, and I never visit anything sketchy on top of frequent Avira and MB scans.

 

[dextermat]

hi,

rundll32.exe can be used in windows background programs and this I think this is normal.

When windows search for updates, it slow down the computer and
rundll32.exe can be involved.

Could be also other programs.

I would be concern only if it happens all the time or periodically.

To be safe, I would run adwcleaner => JRT and roguekiller from bleepingcomputer to see if you have any malware / virus.

 

[cloudropis]

Well, both an Avira and MB scan gave me the okay. But now Avira is stealing all my CPU

https/imgur.com/oXzn3Pk

It just now disabled itself, what the hell is happening?