Well put Jeffrrey, thanks.
Note: Those are commented out because they aren't of interest to all
networks. They ARE reliable, just not an indication of hostile activity.
Just a policy thing.
I use them in a lot of places and have great results.
Matt
-----Original Message-----
From: snort-users-bounces@lists.sourceforge.net
[mailto:snort-users-bounces@lists.sourceforge.net] On Behalf
Of Jeffrey Denton
Sent: Friday, July 13, 2007 3:10 AM
To: Humes, David G.
Cc: snort-users@lists.sourceforge.net
Subject: Re: [Snort-users] Snort rule to detect Windows PE
ExecutableDownloads
On 7/12/07, Humes, David G. <David.Humes@jhuapl.edu> wrote:
I would like to have a Snort rule to reliably detect the
download of a
Windows PE executable file.
alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg: "BLEEDING-EDGE PE
EXE or DLL Windows file download"; flow: established; content:"MZ";
isdataat: 76,relative; content:"This program cannot be run in DOS
mode."; distance: 0; isdataat: 10,relative; content:"PE"; distance: 0;
classtype: misc-activity; sid: 2000419; rev:6; )
alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg: "BLEEDING-EDGE PE
EXE Install Windows file download"; flow: established; content:"MZ";
isdataat: 76,relative; content:"This program must be run under Win32";
distance: 0; isdataat: 140,relative; content:"PE"; distance: 0;
reference:url,www.program-transformation.org/Transform/PcExeFormat;
classtype: misc-activity; sid: 2000427; rev:6; )
If you are running the Bleedingthreats rules, this signatures are
commented out by default.
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