Ty, please do confirm that is possible 
Dotnet is used by a lot of programmes so the removal of this may break one. What I will do is put it in a quarantine just in case
Warning This fix is only relevant for this system and no other, using on another computer may cause problems
Be advised that when the fix commences it will shut down all running processes and you may lose the desktop and icons, they will return on reboot
Run OTL
[*]Under the Custom Scans/Fixes box at the bottom, paste in the following
https://dl.dropbox.com/u/73555776/OTL_Fix.GIF
:Commands
[CREATERESTOREPOINT]
:Files
c:\windows\assembly\NativeImages_v2.0.50727_32\System.Addln.Contra#\35a6b66e089f9164215c96127a0c6276\System.Addln.Contract.ni.dll
:Commands
[resethosts]
[emptytemp]
[Reboot]
[*]Then click the Run Fix button at the top
[*]Let the program run unhindered, reboot the PC when it is done
[*]Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.
Hey
Heres again quickscan log, it again stopped for while at NativeImages if that has anything to do with it.
No it is just that folder is rather large
CAn you run a quick scan now to see if it has gone
Avast quick scan? althouth it dosent look rootkits that good, it still takes time…
OK run the computer as normal for a day or so and if all is well let me know
Its propably so that if scan checks rootkins fast, it dosen’t play attention on that folder, but if rootkins are checked closely then its detected. But lets get back on this later
Quickscan didn’t found viruses, it could not check the NativeImage file because of somekind of error.
The basic rootkit scan looks for active elements which are the ones we are concerned with
Other files, which may be hidden for a legitimate programme, are only searched for on a full scan
Hey
Yep computer have been running nice today, running full scan atm and it found yet again 1 file, ill let you know what it is
And fullscan found the same infected file and was unavailable to move it to quarantine. When scanning the assembly folder, the file could not be scanned because of device error.
OK I would put that on the ignore list, the file is not in use and is part of the dotnet framework
You can uninstall dotnet and then install a fresh copy
Ok sure, could you hint how to add it to ingnore and what actually is dotnet?
Dotnet enables programmers to make their programmes smaller by using already installed element on the system http://en.wikipedia.org/wiki/Dotnet_framework
Add the following folder as an exclusion
C:\Windows\assembly
Ty for advice essexboy, scan now dosen’t pay attention to assembly folder and I got updated dotNet
Wait for a week or so and then remove the exception for the assembly folder to see if it is corrected. Any further problems ?
Not that I know atm
In that case methinks I will tidy up
Subject to no further problems
I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems
Now the best part of the day ----- Your log now appears clean 
A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:
Run AdwCleaner and select Uninstall
Delete JRT from the desktop
Run OTL and hit the cleanup button. It will remove all the programmes we have used plus itself.
Clear Restore Points
Go Start > All Programmes > Accessories > System tools
Right click Disc Cleanup and select run as administrator
When it pops up at the first prompt select OK after it has done some calculations the tabs will appear
Select More Options tab
Press Sytem Restore and Shadow Copies Cleanup button
: Keep Java Updated :
WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article and this article.
I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)
Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:
CryptoPrevent install this programme to lock down and prevent crypto ransome ware
https://dl.dropboxusercontent.com/u/73555776/CryptoPrevent.JPG
Update and run weekly to keep your system clean
It is critical to have both a firewall and anti virus to protect your system and to keep them updated.
To learn more about how to protect yourself while on the internet read our little guide How did I get infected in the first place ?Keep safe 
All right im working on those, should I get back here after a week or so if avast informs still about same file?
Yes please