[Emerging-Sigs] Errata: MyWebSearch alerts on Dell Support

Jack Pepper pepperjack at afferentsecurity.com
Mon Mar 24 16:05:00 EST 2008


The original rule was too restrictive and missed a bunch  this is better:

>
> alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
> Dell MyWay Remote control agent";
> flow: to_server,established; content: "Referer\:
> http\://dell"; depth:100; content:"Host\:"; depth:250;
> content:"myway.com"; nocase; within:20; distance:0;
> classtype:not-suspicious; threshold:type limit, track by_src, count 2,
> seconds 360; sid: 1001663; rev:9;)
>
> alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
> Malware MyWebSearch Toolbar Traffic (r10)";
> flow: to_server,established; content: !"Referer\:
> http\://dell"; depth:100; content:"Host\:"; depth:250;
> content:"myway.com"; nocase; within:20; distance:0;
> classtype:trojan-activity; threshold:type limit, track by_src, count
> 2, seconds 360; sid: 2001663; rev:10;)



-- 

Framework?  I don't need no stinking framework!

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