ET MALWARE Cobalt Strike Malleable C2 Webbug Profile

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Cobalt Strike Malleable C2 Webbug Profile";
    flow:to_server,established;
    http.method;
    content:"GET";
    http.uri;
    content:"_utm.gif?utmac="; fast_pattern;
    content:"&utmcn="; distance:0;
    content:"&utmcs="; distance:0;
    content:"&utmsr="; distance:0;
    content:"&utmsc="; distance:0;
    content:"&utmul="; distance:0;
    http.host;
    content:!"www.google-analytics.com";
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,dc65cbf12622eb55f0fd382e0fe250c5;
    classtype:command-and-control;
    sid:2032748; rev:5;
    metadata:attack_target Client_Endpoint, created_at 2017_04_27, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2020_11_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)