MBAM detects SYSTEM32.dll (Trojan.Agent)

I have three PCs in my household. whenever I scan with MBAM firsttime after a first time it always finds SYSTEM32.dll (Trojan.Agent) in C:\Users\user\AppData\Roaming\
I installed my vista desktop ~ 4days ago. I wanted to test mbam beta in it. It finds the same system32.dll in it. So, I am wondering how can I be infected with same malware all times, even is I reinstall everything after a clean format of all drives. I also redownloaded all the softwares again. I am attaching MBAM log, hijackThis log and NoVirusThanks Hijack Hunter log here.

~Logs removed per Policy.~

 

@stapp:yes I posted it on MBAM forum. I am getting this problem for a long time. So just wanted to take help from multiple experts...
@tipo: I was googling about this problem and got some information that it may be caused by harnig trojan.