What is lol.bat? Should I remove it?

lol.bat is a batch file that contains a set of system commands, which can be used by a particular parasite to manipulate files, corrupt installed software, alter system configuration or launch other pest components. lol.bat is actually a specific text file that acts in a similar way to a regular executable. However, it contains no malicious code, but only commands and therefore cannot run own processes.
The lol.bat file is installed and used by Backdoor.ServuDoor.a.
Sometimes a presence of lol.bat does not indicate that your computer is infected. It can be an essential system file or a file installed by harmless legitimate software and therefore may not pose any threat to your privacy and the system. Although such cases are quite rare, you should thoroughly examine lol.bat before completely deleting or leaving it in the system.