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RE: [Full-Disclosure] Snort on a Bootable FreeBSD CD to catch Nachi,Blaster & Sobig

> -----Original Message-----
> From: Justin Tan [mailto:justin.tan@xxxxxxxxxxxx] 
> Sent: Thursday, September 04, 2003 8:09 AM
> To: full-disclosure@xxxxxxxxxxxxxxxx
> Subject: [Full-Disclosure] Snort on a Bootable FreeBSD CD to 
> catch Nachi,Blaster & Sobig
> 
> 
> On Thu, 2003-09-04 at 20:45, Paul Schmehl wrote:
> >Just curious - what sigs are you using for detection?
> 
> Nachi & Sobig.F - by you, Paul Schmehl(pauls@xxxxxxxxxxxx). 
> Msblaster by Brian Caswell <bmc@xxxxxxxxxxxxxx> & Nigel 
> Houghton <nigel.houghton@xxxxxxxxxxxxxx>
> (http://www.snort.org/snort-db/sid.html?sid=2192)
> 
> Nachi and Sobig.F tested, works fine. Great job there. Only 
> problem is with a possible false positive (Sobig.F sig) with 
> Crystal Reports listening oo port 8998.

I've also seen a handful of hits when a host queries DNS and happens to
do that on 8998/UDP.

Paul Schmehl (pauls@xxxxxxxxxxxx)
Adjunct Information Security Officer
The University of Texas at Dallas
AVIEN Founding Member
http://www.utdallas.edu/~pauls/ 

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