ET MALWARE Maldoc Sending Windows System Information (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Maldoc Sending Windows System Information (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent;
    content:"Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64|3b 20|Trident/7.0|3b 20|rv|3a|11.0) like Gecko"; bsize:68;
    http.request_body;
    pcre:"/^\x26(?:(id|token))\x3d/";
    content:"&session="; within:20;
    content:"|35 33 37 39 37 33 37 34 36 35 36 64 32 30 34 39 36 34 36 63 36 35 32 30 35 30 37 32 36 66 36 33 36 35 37 33 37 33 30 64 30 61|"; fast_pattern; within:200;
    http.uri;
    content:!"|2e|";
    http.header_names;
    content:!"Referer";
    reference:md5,7195d7e4926a0a85fbe81e40ab7c0ca4;
    classtype:trojan-activity;
    sid:2048318; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_08_30, deployment Perimeter, malware_family AtlasCross, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_29, reviewed_at 2023_08_30, former_sid 2855191;
    target:src_ip;
)