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win32k.sys been hacked?

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#1 Douger


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  • Local time:04:31 AM

Posted 17 April 2009 - 03:58 PM

Hello all,

I recently got a call from a user who had a bunch of popups about viruses on her computer. It turned out to be adware that ClamAV identifies as Adware.Fakealert-560, and as Trojan.FakeAV-90. I used ClamAV and AdAware on the machine and that seemed to clean things. I ran HijackThis afterwards and found another suspiscious file still in there, and managed to get rid of that as well. I run MJRegwatcher on the PCs I manage and set it for "Accept all" as I found the users couldn't deal with the false positives it would throw at them when set to Prompt. I wanted to use it for forensic study if needed and after I managed to get rid of everything, there is one entry in the regwatcher log that has me concerned. It is:

** Friday 4/3/2009 4:10:20 PM **
File Details Changed from
c:\winnt\system32\win32k.sys - Size=1,644,432 Date=Sun Sep 14 23:13:42 2008 Attributes=---A-
c:\winnt\system32\win32k.sys - Size=1,644,784 Date=Sun Feb 08 10:16:49 2009 Attributes=---A-

What I can't seem to find on the MS support site is the correct file information for this file. This may have been an automatic update that occurred at this time, I'm not sure. RootkitRevealer does not show any problems regarding this file, just three registry entries that are already discussed in that forum as being false positives.

This entry is immediately followed in the regwatcher log by entries that are obviously related to the fake adware that infected the machine. However this could be coincidental with the booting up of the computer after the infection occurred.

The OS is Windows 2000 SP 4 .

Any cause for concern?

Thanks for the look.


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