Rundll32.exe is a Windows process that we may have been familiar with. However, sometimes it may become the variant virus which can bring bad influence to our computer. You can see this simple example: when you find Rundl(1)32.exe in your system, remember, L and 1 are easily to be confused, then your PC probably has been infected. So how to determine whether our system is infected and which Rundll32.exe is real safe for our system, we should pay enough attention and search for the proper method to solve this problem.
Firstly, let us be clear how does a real Rundll32.exe work on our PC:
A. We can usually see this file under c:\windows\system32. If not, it definitely is virus.
B. Rundll32.exe executes DLL files of 32bits. It executes the inside function of DLL files and make sure your system only has process of Rundll32.exe, not any backdoor of DLL. And no matter how many files or which DLL file it is running, you can find the exact location from the system loading routes.
C. Rundll32.exe is used to transfer dynamic link by working at the command line. It poses an important role to the system running.
Generally speaking, we can determine Rundll32.exe from its directory location or its running route. Indeed, it is the crucial components of system, not virus. But it is usually infected by malicious virus or malware which may mislead computer users. As the example I mentioned from the beginning, sometimes it just changes L to 1, then your PC has been infected! So you are strongly recommended to turn on your security program and make your PC under real-guard protection.
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