Hundreds of rundll32.exe processes running at once, freezing computer

[YashR]

Lately, I've been noticing my computer slowing down, until it freezes completely, allowing only mouse movement and no other interaction (until eventually, sometimes, the mouse freezes too). Having a look around, I've noticed this happens when a massive amount of rundll32.exe processes suddenly activate at the same time. This usually happens just a few minutes after startup, however, it occasionally doesn't happen at all.

After a fair amount of research, coming to assume this is a virus, I've run full scans with both my antivirus (Immunet) and Malwarebytes, and quarantined any threat found. However, the issue persists. I've also run an sfc scan with it being unable to repair some of the files. The failed output was the following: https://pastebin.com/qb6Ecade

I don't know whether this helps in anyway, and so I figured I might as well post it.

Here's a picture of the task manager. Each of the processes also runs about the same amount of memory, which also leads me to believe this is a virus. https://i.imgur.com/OuJcErq.jpg

And so, I was wondering if there's any known or potential fix for this, before I have to go for a clean installation of Windows? I'd rather try all my options first before doing that. Thank you.

 

[RememberThe5th]

I would backup important data, reinstall windows, keep it fresh, download HDTunePro and go to health tab and post back.
If the HDTune reports back with good health, and no RunDLL's are not there it seems like fixed problem, cause I know for sure that many DLLs shouldnt be running at all.

Before doing last resort windows install.

Did you tried to System restore few weeks back? (data Is not going away).
Safe mode?
Try hitmanpro (free 30 days trial if im right) https://www.hitmanpro.com/en-us/hmp.aspx

 

[Darkbreeze]

Do a clean install. It sounds like an infection to me. Very doubtful that even the best scan or removal software will get rid of everything at this point.

http://www.tomshardware.com/faq/id-3567655/clean-installation-windows.html


But you can always try, and there are second opinion scanners that will often find and remove problems not addressed by typical scanners or protections.

http://www.tomshardware.com/faq/id-2602295/protect-remove-virus-malware-rootkit-infections-layman.html