Yesterday I decided to perform a scan with Avira and it found 2 threats in windows\system32: one was: APPL\CloseApp and the other one the dropper of the same malware. My primary AV is NOD32 that said nothing about them. Should I worry about them Some other AVs detect them too as riskware\hacker tools. They were created after installing Vista Transformation Pack. Also, I found another file detected by Avira as: TR/Agent.42064 and also by Bit Defender as Trojan.Simple.VB.A. I've submitted it to sunbelt sandbox and it seems dangerous... you can see the results here: http://research.sunbelt-software.com/ViewMalware.aspx?id=128092 (it deletes and destroys Windows and changes many registry entries and so on..). This last one I've submitted to ESET and nothing.