This sounds like something I had to deal with this week. While the file association thing is something you can fix (quite easily with a registry edit, I can dig it out for you if it still gives you trouble after running MWB scans, just amounts to a bit of copy and paste and double clicking), it's usually a sign of an "exe hijack" component of some malware, so make sure the nasties are gone first.
Download a copy of Malware Bytes (http://www.malwarebytes.org/). Then boot into safe mode, run MWB and do a full scan. Wander off for a bit and come back when it's done, let it remove what it wants to remove, and boot back into normal mode. That should help a lot; MWB is very good with malware, better than I've found AVG to be. Csrss.exe is a system process but what these things often do is copy the names of system files and save them in other places, which makes it really hard to figure out what's naughty and what's an important part of your system. You've probably managed to delete the naughty bit rather than the system file, but you've undoubtedly got remnants of the malware lingering around which will just put things back when you reboot your machine. MWB should sort you out.
The last trojan I picked up manages to run a dummy version of this. You have to download it onto a different pc, rename it move it to the other pc via USB rather than disc and then use it.
Safe mode! It works much better if you boot into safe mode first because then a lot more of the background processes aren't running and it's easier for it to remove anything.
Comments 15
(The comment has been removed)
Now to tackle the file association glitch
Reply
Reply
Reply
Reply
(The comment has been removed)
Reply
Reply
Reply
Reply
Reply
Reply
Reply
download it onto a usb key on another machine, run it in safe mode with networking. when it wants a reboot go back into normal mode
reinstall is the safest option but an arse if you havent got a back up or even the disks for all your hooky software
Reply
Leave a comment