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TDL3 Rootkit Signs/Symptoms?


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#1 Katrex

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Posted 16 February 2010 - 01:35 PM

Hi all. :]

I was wondering what the signs/symptoms of a TDL3 Rootkit infection are? (And the best ways to detect it if there are no clear signs?)

I noticed that I had an update queued up on Windows Update (MS10-015) but it wasn't automatically selecting/downloading itself, so I decided to look up what it was/what it was for and a possible reason... and that is when I came across:
http://www.bleepingcomputer.com/forums/t/296204/tdl3-rootkit-is-causing-bsod-in-17-year-old-ms-bug-patch/ ("TDL3 rootkit is causing BSOD in 17-year old MS bug patch!")

Which made me somewhat... worry. Before I download the update, I'd like to ensure that I don't have this rootkit since I do not have a Windows CD (the people I bought my Laptop from decided to be so kind and not include one) and don't want to deal with the hassle.

I'm fairly certain I don't have it (MABM/SAS/my AV come up clean, nothing out-of-the-ordinary happening), and I'm vastly paranoid about what websites I go to. And on that note... I take it the following sites are all 'okay/safe' ones? I've just never really gone to them/seen them before (they were linked in the above bleepingcomputer link). Yes, I feel as stupid asking this as you probably think I am as you read it. >.>

https://www-secure.symantec.com/connect/blo...rv-and-ms10-015
http://searchsecurity.techtarget.com/news/...1381423,00.html
http://www.wilderssecurity.com/showthread.php?t=265297

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#2 quietman7

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Posted 16 February 2010 - 02:59 PM

TDL3 is the third generation of TDSS which uses rootkit technology to hide itself on a system by infecting drivers like atapi.sys, iastor.sys and a few others. Atapi.sys is a common target for this rootkit because it loads early during the boot process and is difficult to detect. Common symptons/signs of this infection include:
  • Google redirection.
  • Slowness of the computer and poor performance.
  • BSODs that occur immediately after XP splash screen appears.
  • infected atapi.sys and iastor.sys.
If you are not experiencing such symptoms or redirects and your anti-virus is not detecting anything, then get a second opinion by performing an Online Virus Scan.

For more specific analysis and explanation of the infection, please refer to:As the links to the articles indicated, there was a problem with last weeks update resulting in this:
Microsoft halts Windows Update distribution of security fix after blue-screen reports.

Edited by quietman7, 16 February 2010 - 02:59 PM.

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