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Re: [Emerging-Sigs] TROJ_NAIKON.A sig
From: Will Metcalf <wmetcalf () emergingthreatspro com>
Date: Fri, 26 Apr 2013 14:48:40 -0500

This won't work on snort unless 443 is configured as an http port in your
http_inspect config, which it generally is not. No biggie though we can
drop http_header for snort....

Regards,

Will


On Fri, Apr 26, 2013 at 2:35 PM, James Lay <jlay () slave-tothe-box net> wrote:

And another (slow day)

alert tcp $HOME_NET any -> $EXTERNAL_NET 443 (msg:"INDICATOR-COMPROMISED
TROJ_NAIKON.A User-Agent"; flow:to_server,established;
content:"User-Agent|3A| NOKIAN95|2f|WEB"; http_header; fast_pattern:only;
metadata:policy balanced-ips drop, policy security-ips drop, service http;
reference:url,http://blog.**trendmicro.com/trendlabs-**
security-intelligence/**targeted-attack-campaign-**hides-behind-ssl-**
communication/<http://blog.trendmicro.com/trendlabs-security-intelligence/targeted-attack-campaign-hides-behind-ssl-communication/>;
classtype:trojan-activity; sid:10000050; rev:1;)

I'm thinking file_data isn't needed as we're just looking at headers?

James
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