Rundll32.exe is the official name of the command-line utility of Windows. The main purpose of those files is to restrict you to call functions from any given DLL. This is the main reason why malware authors often use these programs or create a fake process of them in order to hide the malicious virus files of the infection they are trying to push onto victims’ computers. As it is mentioned above, Rundll32.exe is a normal system file that is the essential part of Windows, which is responsible for running certain aspects of applications like Internet Explorer. If you have some problems with this file on your computer and your OS often shows you different error messages, including the names of this file, you should find out what is the reason of the problem. If the reason is infection, then you should remove rundll32.exe trojan as soon as possible.
What Is Rudll32.exe Trojan?
Rundll32.exe is a process registered as a backdoor vulnerability which may be installed for malicious purposes by an attacker allowing access to your computer from remote locations, stealing passwords, Internet banking and personal data. This process is a security risk and should be removed from your system.
Non-system processes like rundll32.exe originate from software you installed on your system. Since most applications store data on your hard disk and in your system’s registry, it is likely that your computer has suffered fragmentation and accumulated invalid entries which can affect your PC’s performance.
In Windows Task Manager, you can see what CPU, memory, disk and network utilization is causing the Backdoor.W32.Ranky process. To access the Task Manager, hold down the Ctrl + Shift + Esc keys at the same time. These three buttons are located on the far left of your keyboard.
The rundll32.exe is an executable file on your computer’s hard drive. This file contains machine code. If you start the software Backdoor.W32.Ranky on your PC, the commands contained in rundll32.exe will be executed on your PC. For this purpose, the file is loaded into the main memory (RAM) and runs there as a Backdoor.W32.Ranky process (also called a task).
Why Is Rundll32.exe Trojan Giving Errors?
Most rundll32 issues are caused by the application executing the process. The surest way to fix these errors is to update or uninstall this application. Therefore, please search the website for the latest Backdoor.W32.Ranky update.
Rundll32.exe Trojan – How Does It Work?
Any given trojan virus that interacts with the RunDLL processes may drop it’s malicious files undetected on your PC first. The files are often from different file types and they may be located in the commonly targeted Windows directories by malware attack:
Once this has been done, the malware may begin it’s malicious activities on your computer. The virus may either spawn a fake Rundll32 process or it may execute DLL files as an administrator by corrupting your main Rundll files. This is known as privilege escalation and Is something that grants the virus privileges to act as if it was the administrator or owner of your computer.
Be advised that the original location of the Rundll.exe and Rundll32.exe files is the following:
But this does not mean that the virus won’t create a fake file in the same directory in order to fool you that this is the actual file. The only way to detect it is to see if the file is verified by Windows. This is done by right-clicking on the file itself and clicking on Properties. Then, you will be able to see the file to be identified and verified by Windows:
If this is the case, but you still believe there is a virus on your computer, be advised that the virus may be using malicious .dll components that exploit the legitimate Rundll32.exe file and this means that you should not remove it.
Why to Backup Your Files If You See Suspicious Activity From Rundll32.exe?
Furthermore, If there is a Trojan virus, be advised that the consequences for that may be different. But they are almost always the following:
- The Trojan malware may be logging your keystrokes.
- Data may be stolen from your web browser (Passwords, .etc).
- More malware may infect your PC.
- The Trojan virus may have the ability to take screenshots and control hardware from your PC.
- Your files may be copied from your system or may be corrupted.
These are the main reasons why you should play it safe and backup your files if you see suspicious activity coming from Rundll32.exe.
How to Detect Rundll32.exe Trojan on Your Computer?
Windows system files are easy target for viruses infections, as it is quite difficult to locate malicious files among windows’ files. The problem with rundll32 might be caused by a system error. But it can also turn out to be that your computer is infected with rundll32.exe virus and all the problems are because of its viral activity. Let’s define the reason of the error case. Here’s the list of possible symptoms that were caused by viruses:
- You can’t use your browser as you like, because all the pages are constantly redirected. Usually viruses redirect the pages of search engines or their results and you can’t find anything you are looking for. Including the information about viruses and the methods of their removal;
- Sometimes you cannot access some very important parts of your system. For example your Task Manager is blocked and you can’t open some settings via Control Panel, or some other system settings;
- You can notice also that rundll32.exe process spends high CPU (ranging from 40% to 100%);
- Noticeable slowdown of the performance on the computer, errors of unknown type.