ET MALWARE Cobalt Strike Malleable C2 (Safebrowse Profile) POST

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Cobalt Strike Malleable C2 (Safebrowse Profile) POST";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/safebrowsing/rd/"; depth:17;
    http.accept;
    content:"text/html,application/xhtml+xml,application/xml|3b|q=0.9,*/*|3b|q=0.8"; bsize:63;
    http.accept_lang;
    content:"en-US,en|3b|q=0.5"; bsize:14;
    http.accept_enc;
    content:"gzip, deflate"; bsize:13;
    http.cookie;
    content:"PREF=ID=U="; depth:10; fast_pattern;
    pcre:"/^[a-z0-9]{10,}$/Rsi";
    http.header_names;
    content:"|0d 0a|Accept-Language|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|Cookie|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; depth:70;
    content:!"Referer";
    reference:url,github.com/rsmudge/Malleable-C2-Profiles/blob/master/normal/safebrowsing.profile;
    classtype:command-and-control;
    sid:2030344; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_16, deployment Perimeter, malware_family Cobalt_Strike, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2020_06_16, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)