ET MALWARE APT28 Zebrocy/Zekapab CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE APT28 Zebrocy/Zekapab CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php";
    isdataat:2,relative;
    http.user_agent;
    content:"browser"; depth:7; endswith; fast_pattern;
    http.request_body;
    content:"|0d 0a|Host|20|Name|3a|"; depth:300;
    content:"OS|20|Configuration|3a|"; distance:0;
    content:"|0d 0a|Registered|20|Organization|3a|"; distance:0;
    content:"Original|20|Install|20|Date|3a|"; distance:0;
    reference:md5,d09b5ae50e7ce1eb2db2e5d72292e907;
    classtype:targeted-activity;
    sid:2044218; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_25, deployment Perimeter, malware_family Zebrocy, performance_impact Low, confidence High, signature_severity Major, tag APT, updated_at 2023_02_16, former_sid 2836072;
)