alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE OSX/Shlayer CnC Activity M3";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/?campid="; fast_pattern;
content:"&model="; distance:0;
content:"&os="; distance:0;
content:"&city="; distance:0;
content:"&ip="; distance:0;
content:"&ua="; distance:0;
content:"&language="; distance:0;
content:"&isp="; distance:0;
content:"&carrier="; distance:0;
reference:url,www.carbonblack.com/2019/02/12/tau-threat-intelligence-notification-new-macos-malware-variant-of-shlayer-osx-discovered/;
classtype:command-and-control;
sid:2026912; rev:3;
metadata:affected_product Mac_OSX, created_at 2019_02_14, deployment Perimeter, malware_family Shlayer, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_08_27;
)