Re: Weird traffic

[James Matthews <nytrokiss () gmail com>]

If you have a large paste can you please put it in a pastebin.

On Wed, Feb 25, 2009 at 7:50 PM, julio sanchez <pete.sanches () gmail com>wrote:

> No IDS alert yet.
> What alerted us was the constant ARP loop scan on various vista sp1 box
> while we was monitoring the network
> I'll send a pcap in one hour or twoThanks
> 2009/2/25 B Null <bnull () offenseindepth com>
>
> > Can you provide a pcap with the suspect traffic isolated?  Also, what
> > alerted you to the odd behavior?  Did the traffic flag an IDS alert?
> >
> > bNull
> >
> > On Wed, Feb 25, 2009 at 9:27 AM, julio sanchez <pete.sanches () gmail com>wrote:
> >
> > > Hi,
> > >
> > > We're experiencing some weird arp traffic on our network, some box scan
> > > constantly the subnets with loop "who-has" request
> > > All the box are all windows vista sp1 fully patched.
> > > We did format all the  supect box, and isolate them on a vlan, to
> > > reinstall vista, updates, kaspersky, then we put it back on the network, and
> > > still some ramdom freshly formated box scanning the network.
> > > We find out that Vista will do an arp scan when it search for a network
> > > printer, but it does this once.
> > > The problem we have is an almost permanent arp scan on various boxs.
> > > We know that some worm was hitting some network around the world with the
> > > smb vulnerability, but all of our boxs are fully updated.
> > > Have you experienced something like this before, or it seems to be legit
> > > traffic ?
> > > Can this be a worm or something related ?
> > >
> > > Thanks in advance
> > >
> > > Pete
> > >
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