rundll32.exe is a application which is probably NOT a virus or malware. So, if rundll32.exe is on your PC, it is probably ok, and will NOT cause problems. Even if your PC is virus-free, it is still recommended to use a good antivirus with a good detection rate, in order to yourself your system against potential security problems.
Normally, this program is stored in C:\Windows\System32\rundll32.exe.
The MD5 checksum for this executable is dd81d91ff3b0763c392422865c9ac12e.
This application is NOT a Windows service. This is very good.
rundll32.exe seems to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This is a 64-bit executable. It uses the full capacity of nowadays' computer processors.
The description stored in the program is Windows host process (Rundll32).
File version stored as a property 6.1.7600.16385 (win7_rtm.090713-1255).
Producer Microsoft Corporation.
Legal copyright notice © Microsoft Corporation. All rights reserved..
This app does NOT have visible windows. This is most likely a bad thing.
rundll32.exe is digitally signed. Nowadays most clean programs are digitally signed.
The digital signature found in rundll32.exe verifies as ok. This is excellent.
Digitally signed by: Microsoft Windows
Certificate's issuer name: Microsoft Windows Verification PCA
This application does NOT have a removal routine stored in registry.