has been considered as Trojan which supports to install more other Malware from remote server on targeted computer system. It usually comes loaded with free software installer that enter into the users' computer system without their consent.
MaltMark is an adware program which had created havoc amongst the computer users. It secretly sneaks in the PC with free programs and installs its own extension in the browser. Thus, try to remove MaltMark in the initial phase after detection.