ET MALWARE MalDoc Request for Payload (TA505 Related)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE MalDoc Request for Payload (TA505 Related)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".tmp"; endswith;
    http.host;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/";
    http.start;
    content:".tmp|20|HTTP/1."; fast_pattern;
    content:"|0d 0a|Host|3a 20|"; distance:1; within:8;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; depth:25;
    classtype:trojan-activity;
    sid:2027143; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_02, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_09_17;
)