ET MALWARE OSX/GMERA.B CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE OSX/GMERA.B CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/link.php?"; depth:10; fast_pattern;
    content:"&"; distance:0;
    pcre:"/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$/R";
    http.header_names;
    content:!"Referer";
    reference:url,blog.trendmicro.com/trendlabs-security-intelligence/mac-malware-that-spoofs-trading-app-steals-user-information-uploads-it-to-website;
    classtype:command-and-control;
    sid:2028620; rev:2;
    metadata:affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2019_09_24, deployment Perimeter, malware_family OSX_GMERA_B, confidence High, signature_severity Major, updated_at 2020_09_02;
)