[Snort-sigs] International Domain Name access

James Lay jlay at ...3266...
Tue May 7 19:37:28 EDT 2013


Good catch…fixed is below..thanks RM! 

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"POLICY International Domain Name web access"; flow:to_server,established; content:"Host|3a|"; http_header; content:"xn--"; http_header; within:100; classtype:trojan-activity; metadata:ruleset community; reference:url,http://blogs.msdn.com/b/ie/archive/2006/07/31/684337.aspx; sid:10000052; rev:1;)


> Hi James,
> 
> http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2007-3164
> 
> Maybe missed first http_header on first content ?
> 
> Regards
> Rmkml
> 
> 
> De : James Lay <jlay at ...3266...>
> À : Snort-sigs <snort-sigs at lists.sourceforge.net> 
> Envoyé le : Mercredi 8 mai 2013 0h58
> Objet : [Snort-sigs] International Domain Name access
> 
> Just had a hootin good time here....never seen a host like this before:
> 
> xn----4tbbdcdd.xn--p1ai
> 
> The below should alert on web access...not sure if I'll sig up DNS 
> requests.
> 
> alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"POLICY 
> International Domain Name web access"; flow:to_server,established; 
> content:"Host|3a|"; content:"xn--"; http_header; within:100; 
> classtype:trojan-activity; metadata:ruleset community; 
> reference:url,http://blogs.msdn.com/b/ie/archive/2006/07/31/684337.aspx; 
> sid:10000052; rev:1;)
> 
> Maybe useful, maybe not.
> 
> James
> 
> ------------------------------------------------------------------------------
> Learn Graph Databases - Download FREE O'Reilly Book
> "Graph Databases" is the definitive new guide to graph databases and 
> their applications. This 200-page book is written by three acclaimed 
> leaders in the field. The early access version is available now. 
> Download your free book today! http://p.sf.net/sfu/neotech_d2d_may
> _______________________________________________
> Snort-sigs mailing list
> Snort-sigs at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/snort-sigs
> http://www.snort.org
> 
> 
> Please visit http://blog.snort.org for the latest news about Snort!
> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.snort.org/pipermail/snort-sigs/attachments/20130507/fe993702/attachment.html>


More information about the Snort-sigs mailing list