ET MALWARE Win32/RA-based.NCX CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/RA-based.NCX CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/dir/id.php?id="; startswith; fast_pattern;
    content:"&cn="; distance:0;
    content:"&un="; distance:0;
    content:"&admin="; distance:0;
    content:"&comment="; distance:0;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a 0d 0a|"; startswith;
    reference:md5,b2b1098602897dc4ca2f886b59e5c50e;
    classtype:command-and-control;
    sid:2038484; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_10, deployment Perimeter, malware_family Win32_RA_based_NCX, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_10, reviewed_at 2024_12_24;
)