ET MALWARE Win32/Snojan Variant Sending System Information (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Snojan Variant Sending System Information (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.header_names;
    content:"|0d 0a|Content-Type|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|";
    http.request_body;
    content:"NetBios|20|name|3a 20|";
    content:"|0d 0a|Username|3a 20|"; distance:0;
    content:"|0d 0a|Operating|20|system|3a 20|"; distance:0; fast_pattern;
    reference:md5,21b75d95a833c8e366747afcb4b25051;
    classtype:trojan-activity;
    sid:2044259; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_02_21, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_Snojan, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_21;
    target:src_ip;
)