ET RETIRED ZuoRAT send_http_msg_php Call to dns.php

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED ZuoRAT send_http_msg_php Call to dns.php";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/dns.php"; startswith;
    content:"o_addr="; fast_pattern;
    content:"ip_addr=";
    content:"dns=";
    http.header;
    content:"Cache-Control|3a 20|max-age=0";
    content:"Upgrade-Insecure-Requests|3a 20|1";
    reference:url,github.com/blacklotuslabs/IOCs/blob/main/ZuoRAT_IoCs.txt;
    classtype:targeted-activity;
    sid:2037140; rev:3;
    metadata:attack_target Client_and_Server, created_at 2022_06_28, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family ZuoRAT, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_17, reviewed_at 2024_09_17;
)