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Whatt the heck is rundll32.exe?

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Whatt the heck is rundll32.exe?

Old 03-09-04, 07:55 AM
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Whatt the heck is rundll32.exe?

Everytime I go to close down XP Pro it lags a bit and then says rundll32.exe is not responding. I have to click END NOW before it shuts off.

I didnt do anything to make this show up..what gives?

Last edited by namrufmot; 03-09-04 at 08:21 AM.
Old 03-09-04, 11:43 AM
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Hmm - by default Windows does not run rundll32.exe as a normal process.

Description: Microsoft "Run a DLL as an App". RUNDLL32 is the Microsoft Windows program that loads DLLs into memory so that they can be used by specific programs or by Windows.
Only time I've seen rundll32.exe sitting in memory is when Spyware is present on a client's computer. Are you clean?
Old 03-09-04, 11:46 AM
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I'm cleaner than a virgin's honeypot.

I've attacked it with updated Ad-Aware and Spybot. I also ran the lastest AVG virus checker.

Any other ideas?
Old 03-09-04, 12:00 PM
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What kind of programs do you normally have running?

Close everything out like you'd do before a shutdown and peek at the process list. Maybe something in the systray is lagging it up.

Any rogue entries in:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Or

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

with rundll32.exe startup keys?
Old 03-09-04, 12:06 PM
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I'll check when I get home from work and let you know.
Old 03-09-04, 12:35 PM
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You have one of the W32.Miroot.Worm / W32/Legemer.Worm / W32.HLLW.Sanker viruses (or another virus). Possibly anyway, there is a big entry for the regular rundll32 above it.


http://www.answersthatwork.com/Taskl...tasklist_r.htm
Old 03-09-04, 03:39 PM
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I just ran 2 other virus checkers and nothing shows up! When I ALT + CTRL + DELETE rundell32.exe is one of the processes. If I end it, XP shuts down fine. Hmm....
Old 03-09-04, 09:01 PM
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I run win 98 and get that error sometimes. It never shows up in running processes, but if I overload my system with open programs and things lag to a point where it freezes up, I usually get the rundll32 error. I'm not sure what it is. I have a clean system too and it's been happening every once in awhile for the last 5 years.
Old 03-09-04, 10:40 PM
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From http://answersthatwork.com/



Microsoft’s “Run a DLL as an App”. A DLL is a Dynamic Link Library. In layman and [very] simplistic terms a DLL is a portion of a software program which is only used by the main program as and when specific features of the software are used by the end user (for instance the PRINT function in your wordprocessor). The main advantage is that, using this technique, programmers can develop software which does not end up gobbling up memory through the whole program loading in one go, but which instead only uses enough memory for the core functions of the program, with specific features, implemented in separate DLL files, only loaded as and when the end-user decides to use them (ie. The Print DLL will only be loaded into memory when the end-user clicks on PRINT). Another advantage is that the software developers can also have common features which they have implemented across a range of their programs, implemented just the one time as a shared DLL which is used by all that developer’s programs. RUNDLL and RUNDLL32 are the Microsoft Windows programs that need to be used to load DLLs into memory so that they can be used by specific programs or by Windows.

Recommendation :
RUNDLL and RUNDLL32 do not normally appear in the Task List in Windows. In our experience they tend to appear only when you are already having problems of some sort with your PC, or a particular DLL is either misbehaving, is buggy, or is having problems, such as a Control Panel applet hanging for example. If you see RUNDLL or RUNDLL32 in your Task List persistently then you should be [slightly] worried (see below the other entry for RUNDLL32) – make sure you have good and up‑to‑date antivirus software, boot into Safe Mode, and run a full virus scan on your PC. If you do not have a virus and see either in your Task List, simply leave it alone. We are not sure as to the other times when the real RUNDLL or RUNDLL32 can sometimes suddenly appear in the Task List, but you should leave them alone in most cases provided, again, that you know you do not have a virus.


You have one of the W32.Miroot.Worm / W32/Legemer.Worm / W32.HLLW.Sanker viruses (or another virus).

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