ET MALWARE Generic VBS Backdoor Sending Windows Information (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Generic VBS Backdoor Sending Windows Information (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/api/alert"; fast_pattern; bsize:10;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)"; bsize:57;
    http.request_body;
    content:"|7b 22|comp|22 3a 20 22|"; startswith;
    content:"|22 2c 22|user|22 3a 20|"; distance:0;
    content:"|22 2c 22|version|22 3a 20|"; distance:0;
    content:"|22 2c 22|arch|22 3a 20|"; distance:0;
    content:"|22 2c 22|caption|22 3a 20|"; distance:0;
    content:"Windows"; distance:0;
    http.header_names;
    content:!"Referer";
    reference:md5,182fdcc1c5510b28eaadf9c0ce207932;
    classtype:trojan-activity;
    sid:2049002; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_10_31, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_31, reviewed_at 2023_10_31;
    target:src_ip;
)