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Re: Re : Trojan.APT.Seinup sig with pcre help request
From: James Lay <jlay () slave-tothe-box net>
Date: Wed, 19 Jun 2013 12:52:44 -0600

On 2013-06-19 12:26, Rm Kml wrote:
Hi James,

Thx for sharing and great rule.

Missed [ before first a-z.

Add . on content begining.

Add U on pcre option.

Best Regards
 @Rmkml



Boy I sure missed a bit...thanks RM!

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MALWARE-CNC 
Trojan.Win32.APT.Seinup outbound connection"; 
flow:to_server,established; content:".php|3f|"; http_uri; 
pcre:"/\x2ephp\x3f[a-z0-9]{11,13}=[a-z0-9]{3,7}\x26/iU"; metadata:policy 
balanced-ips drop, policy security-ips drop, service http; 
reference:url,http://www.fireeye.com/blog/technical/malware-research/2013/06/trojan-apt-seinup-hitting-asean.html; 
classtype:trojan-activity; sid:10000081; rev:1;)

James

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