ET MALWARE Cobalt Strike Malleable C2 (QiHoo Profile)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Cobalt Strike Malleable C2 (QiHoo Profile)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:!".";
    http.accept;
    content:"text/html,application/xhtml+xml,application/xml|3b|q=0.9,image/webp,image/apng,*/*|3b|q=0.8"; bsize:85;
    content:!"application/signed-exchange";
    http.user_agent;
    content:"Mozilla/5.0 (Linux|3b 20|Android 4.1.1|3b 20|Nexus 7 Build/JRO03D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Safari"; bsize:123;
    content:!"Safari/535.19";
    http.cookie;
    content:"__guid="; depth:7;
    content:"|3b|opqopq="; distance:0; fast_pattern;
    content:"|3b|QiHooGUID="; distance:0;
    content:"|3b|"; endswith;
    http.header_names;
    content:!"Accept-";
    content:!"Referer";
    classtype:command-and-control;
    sid:2032746; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_11, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2022_05_03, reviewed_at 2024_03_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)