This threat (Virtumonde) is a kind of spyware. You should threat this malware as such and should protect yourself against it at all times by using ways to delete it from your PC as soon as it is detected. The best way for you to do that is to use a good antivirus application. that will scan and protect your computer on a regular basis. If you do take care a lot of your computer, this Trojan will not affect your PC even if it is affecting lots of computer systems.