How to unregister malicious DLLs?
Dynamic-link library files (DLLs) are the files, often used by complex parasites. Containing code responsible for implementing certain harmful functions, these files are required by threats to work as intended. DLLs are mostly packed in browser hijackers and browser plug-ins. Moreover, sometimes DLLs can be injected into some safe essential system services. Recorded to those system services, DLLs can be particularly impossible to remove manually or eliminate using automatic spyware removers.
To get rid of these files, the user should know that the only way is to unregister DLLs and delete them like simple files after that. To unregister DLLs simple and quick, there is a guide presented above.
Firstly, the tool called Regsvr32 is needed. Regsvr32 is created to register and unregister DLLs and other similar files. This tool is already included in operating Windows system distribution of the PC.
For example, trying to unregister IScript7.dll library file (Note that this file is an example, this current file is fully legitimate!), located in C:\Program Files\Common Files\InstallShield\Driver\7\Intel 32 directory, the user should do those steps:
1. Open the Command Prompt
Press the Start button and click on the Run option. This will start the Run tool. In its Open: field type cmd and press the OK button.
Image 1. Open the Command Prompt
2. Navigate to the exact DLL location
User has to change the directory to exact DLL location path as shown on Image 2. when the Command Prompt window will appear. The cd command (it is used to change the current directory) must be typed, then space and the full path to the DLL must be entered. Press enter. This will change the current directory to that you have entered. To display directory contents use the dir command.
Image 2. Navigate to a folder containing the DLL
3. Unregister the DLL
Within the exact directory the user have to type this command: regsvr32 /u [dll_name] and press enter.
Image 3. Unregister the DLL
If the DLL was registered in the system and the operation was successful, the user should see a message very similar to the following:
Image 4. The operation succeeded.
It is possible to get accidentally unregistered harmless DLL, in that way it can be registered back by invoking regsvr32 command without the /u key: regsvr32 [dll_name]. This will undo the changes.
To get rid of these files, the user should know that the only way is to unregister DLLs and delete them like simple files after that. To unregister DLLs simple and quick, there is a guide presented above.
Firstly, the tool called Regsvr32 is needed. Regsvr32 is created to register and unregister DLLs and other similar files. This tool is already included in operating Windows system distribution of the PC.
For example, trying to unregister IScript7.dll library file (Note that this file is an example, this current file is fully legitimate!), located in C:\Program Files\Common Files\InstallShield\Driver\7\Intel 32 directory, the user should do those steps:
1. Open the Command Prompt
Press the Start button and click on the Run option. This will start the Run tool. In its Open: field type cmd and press the OK button.
Image 1. Open the Command Prompt
2. Navigate to the exact DLL location
User has to change the directory to exact DLL location path as shown on Image 2. when the Command Prompt window will appear. The cd command (it is used to change the current directory) must be typed, then space and the full path to the DLL must be entered. Press enter. This will change the current directory to that you have entered. To display directory contents use the dir command.
Image 2. Navigate to a folder containing the DLL
3. Unregister the DLL
Within the exact directory the user have to type this command: regsvr32 /u [dll_name] and press enter.
Image 3. Unregister the DLL
If the DLL was registered in the system and the operation was successful, the user should see a message very similar to the following:
Image 4. The operation succeeded.
It is possible to get accidentally unregistered harmless DLL, in that way it can be registered back by invoking regsvr32 command without the /u key: regsvr32 [dll_name]. This will undo the changes.
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