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Re: .exe
From: waldo kitty <wkitty42 () windstream net>
Date: Sat, 04 May 2013 14:44:36 -0400

On 5/4/2013 07:46, tarik shalo wrote:

I wrote the following rule to test if Snort fires when any executable files are
downloaded. However, the rule is not firing for some reason. Any help or other
option to accomplish the same goal, pls?

alert any any -> any any (msg: ".exe found"; flow:to_server,established;
content:".exe"; nocase;classtype:policy-violation;sid:10000056;rev:1; )

FWIW: this rule will not detect .exe files only... what it detects is the 
content of ".exe" in any traffic being *sent to a server*...

this post should fire this rule if snort is looking at your mail server's 
connection when this message arrives... in fact, every message in this thread 
should have fired your rule when they hit your smtp server if snort is in the 
right place to see it...

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