RE: TCP port 5000 syn increasing

[Paul Schmehl <pauls () utdallas edu>]

--On Wednesday, May 19, 2004 10:58:34 AM +1200 Nick FitzGerald 
<nick () virus-l demon co uk> wrote:

> Paul Schmehl <pauls () utdallas edu> wrote:
>
> > I'd be inclined to agree with you, Jose.  I suspect this is something
> > new  that's been "distributed" through a bot network of already
> > compromised  machines (Agobot/Gaobot).  I'm seeing *some* correlation
> > between hosts  "poking" me on 3217 and 6129 (Agobot for sure) and 5000,
> > but not on the  other ports.
>
> By "*some* correlation" do you mean "temporally close" or just "these
> IPs hit those three ports in the last 24 hours"?
I mean both at the same time and from the same IP.  Unfortunately, Roger 
hasn't made it easy to extract serial data from wormradar yet, or I would 
post the evidence here.  What I've been seeing for some time now is a 
massive amount of probes on ports 3127 and 6129 (repeatedly from the same 
IP addresses) interspersed with an occasional probe on 5000 from the *same* 
IP.  This leads me to believe that at least *some* of the 5000 probing is 
deliberate rather than automated.

Furthermore, I saw the first probe on 5000 on 4/24, long before either of 
the recent worms being blamed for this traffic came out.  Joe Stewart makes 
a good case for at least *some* of that traffic coming from the one worm 
(I'm sorry, but the names all seem to run together these days), but I'm not 
convinced that all of it is.

BTW, I second your comments about wormradar.  Everyone should have at least 
one running on their network, if for no other reason than to amaze them 
with the amount of crap floating around on the Internet.

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

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