iks111.reg definition, relationships, removal:

This is a part of a malicious parasite that violates user privacy and damages the compromised system. The iks111.reg file can be used for different purposes depending on the related parasite's type, functionality and carried payload. Although iks111.reg may not take any malicious actions by itself, it ensures that a parasite is working properly and therefore needs to be removed. DO NOT open, execute or edit iks111.reg!
The iks111.reg file is installed and used by keylogger Invisible Keylogger.
In some cases a presence of iks111.reg does not mean that your system is infected. The file may actually belong to some fully legitimate applications and therefore must stay intact. If you are in doubt, please scan the iks111.reg file using you regular spyware remover or antivirus program.