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Tdsskiller, others blocked by rootkit

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#1 Teconic


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Posted 20 April 2011 - 04:29 PM

I'm here because I WAS infected by a particularly nasty bit of malware - now gone, but wanted to share because I found no references to this TDSS variant.

OS: Windows 7 Business, 32 bit. Symptoms: Google redirects, pop-up audio commercials (new to me!), IE Script error pop-ups (even when out of IE), general weirdness. Tried: Rkill (ran OK, no results), Malwarebytes (ran, found nothing), Symantec (ran, found a few Java junk files, no payload. I was pretty sure that I had TDSS on board, but TDSSKiller would not execute - quick clock then nothing. Safe Mode, no change. Combofix found a few things, no rootkit. I tried GMER - found nothing.

Finally yanked the hard drive out and mounted it in a clean system, scanned with Microsoft Security Essentials. Found Win32/Alureon.K in \Windows\System32\Drivers\Volsnap.sys. Replaced Volsnap.sys with a clean copy - Bam! All fixed!

Did a search on TDSS and Volsnap.sys and found a couple of references to it. One guy posted a video of his experience with it. He used something called Dr. Web Cure-it. Anybody tried it? Anyway, wasted many hours chasing this PITA, and a couple of minutes fixing it once I knew where it was. Hope someone finds this info useful. This site has been extremely useful to me over the years and I just wanted to give a little bit back. Thanks!

Edited by Teconic, 20 April 2011 - 04:32 PM.

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#2 boopme


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Posted 20 April 2011 - 08:31 PM

Thanks for your post. Yes we use DRWeb here. Volsnap is anew variant to the TDL... infection.
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#3 quietman7


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Posted 21 April 2011 - 11:46 AM

Volsnap is anew variant to the TDL... infection.

And it won't be the last.
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