Orbit Downloader DoS

[James Lay <jlay () slave-tothe-box net>]

That's kind of sad....thought this software had been a round a while 
(never used it..glad now)

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"PUA-OTHER 
Orbit Downloader Silent DoS DLL download"; flow:to_server, established; 
content:"/update/ido.ipl"; http_uri; fast_pattern:only; metadata:policy 
balanced-ips drop, policy security-ips drop, service http; 
reference:url,www.welivesecurity.com/2013/08/21/orbital-decay-the-dark-side-of-a-popular-file-downloading-tool; 
classtype:unknown; sid:10000090; rev:1;)

Anything to make this better?  Maybe add header check for "orbit" in 
the host or...something else?  Thanks all.

James

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