Re: [Emerging-Sigs] Rule assist

[Will Metcalf <wmetcalf () emergingthreatspro com>]

Just as an FYI all of my hits on these eventually lead to smoke loader and
it's associated sigs firing.

Regards,

Will


On Tue, Jun 25, 2013 at 12:22 PM, James Lay <jlay () slave-tothe-box net>wrote:

> On 2013-06-25 11:10, Joel Esler wrote:
>
> > content:"GET /?1 HTTP/1.1"; fast_pattern:only;
> >
> > is your best bet.
> >
> > You could break it out like this if you want:
> >
> > urilen:3; content:"GET"; http_method; content:"/?1"; http_uri;
> > content:"HTTP/1.1";
> >
> > "HTTP/1.1" isn't in a buffer, perhaps that's where you are getting the
> > problem?
> >
> > --
> > JOEL ESLER
> >
> > Senior Research Engineer, VRT
> > OpenSource Community Manager
> > Sourcefire
>
> Thanks Joel and Will...here's the full rule:
>
> alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS
> (msg:"INDICATOR-COMPROMISED Unknown ?1 redirect";
> flow:to_server,established; content:"GET /?1 HTTP/1.1"; fast_pattern:only;
> metadata:policy balanced-ips drop, policy security-ips drop, service http;
> classtype:bad-unknown; sid:10000082; rev:1;)
>
> Going to run this in production and see how it flies.
>
>
> James
>
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