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What is Rundll32.exe?

Anonymous
2017-01-09T11:42:39+00:00

"C:\Windows\SysWOW64\rundll.32.exe" - Windows host process (Rundll.32exe)- shows up 5 times at open.   What is this and does Win7 need it?  Think it's connected to Chrome, but I'm a dummy.  It's pernicious to Fire Fox, Pale Moon, Internet Explorer and Chrome (Chrome I just uninstalled).  I've run Disk Clean Up w System,  Security Essentials and Malicious Malware Remover.  It disappeared for a while, but came back.  My little Dell 745 sounds like a Titan Rocket launching, CPU at 100% all the time. Help!

<Moved from Virus and Malware>

***Subject edited for clarity by the moderator.***

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  1. Anonymous
    2017-01-11T19:39:52+00:00

    Dear Ernie San,

    I appreciate your information and advice on this Pestercating .dll32 problem that has developed on my little Dell. 

    A few things I've found out is that I have a 64 bit system, but some of the movie sites I go to have 32 bit viewing / sound enhancements. Seems like dll's appear with NetFlix, PubFilm and Cucirca.uk.  I'm pretty sure these dll's have to do with the Sound System. Just ordered a new set of speakers, which I needed any way.

    I've also found out my Excede (ViaSat) Satellite company has just limited my monthly "Band Width" use unless I want to pay an additional amount per MB or GB of use.  (I've got a call into these people, because there service/speed has never been worth a darn and now they want more money for it. First installed in Winter and the installer aimed the Sat at a bare tree.  Spring came, leaves grew and my service went very sketchy.) 

    I'm certainly going to try the System File Checker, later this evening, and I Thank You for your help.  I'll let you know if and what I find out.

    My best regards,

    Sharon

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  2. Anonymous
    2017-01-10T12:05:45+00:00

    Hello Sharon,

    The Rundll32.exe is used to launch functionality stored in shared Dynamic-link library files or DLL. This is a valid part of Windows, and normally shouldn’t be a threat.

    To ensure that there's no missing or corrupted files from your computer, we suggest running a System File Checker tool.

    For more information, click here.

    Let us know how it goes.

    Regards.

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