Most DLL files are essential for the running of your programs but there are other malicious programs, such as browser hijackers and browser plugins, that are usually made up of DLL files that can alter your system settings to allow attackers gain access on your computer.
Why is it important to remove malicious DLLs? So instead of all the coding being built into the program, it uses a particular DLL file that, with a simple call, can execute the operation for it. The benefit of having DLL files is that they don't get loaded into random access memory (RAM) along with the main program, which saves up space in RAM. A DLL file can be used by several programs at the same time. DLL (Dynamically Link Library) is an executable file that permits programs to share code to perform one or more predefined functions.
