RE: Trojan modifying ntdll.dll and cmd.exe

["Bojan Zdrnja" <Bojan.Zdrnja () LSS hr>]

> -----Original Message-----
> From: Harlan Carvey [mailto:keydet89 () yahoo com] 
> Sent: Friday, 16 May 2003 10:57 p.m.
> To: incidents () securityfocus com
> Subject: Re: Trojan modifying ntdll.dll and cmd.exe
>
>
> Eric,
>
> I'd like to ask a couple of questions, to get some
> clarification.
>
> > We have encountered a trojan that has modified both
> > cmd.exe and
> > ntdll.dll on a Windows 2000 machine.  The files
> > failed our CRC check
> > (TDS was used for this, these out of 29 CRC-checked
> > files were flagged
> > as modified and Windows also flagged it).
>
> What is "TDS"?  It sounds as if it might be Tripwire,
> but I'm not familiar w/ the acronym.

I'll leave other answers to the original poster.
TDS might be Trojan Defence Suite (as he said he detected a trojan). That is
"anti-trojan" program which works pretty similar as anti-virus programs (has
its own database of known signatures and supports some level of heuristic
scanning, which can lead to lot of false-positives).

Find more info about it at the following URL:

http://tds.diamondcs.com.au/

Best regards,

Bojan Zdrnja


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