ET MALWARE Win32/Agent.UOI CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Agent.UOI CnC Checkin";
    flow:established,to_server;
    http.request_line;
    content:"POST|20|/beacon.php|20|"; startswith; fast_pattern;
    http.request_body;
    content:"architecture="; startswith;
    content:"&hostname="; distance:0;
    content:"&os="; distance:0;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    reference:md5,74cf39a4148c88adfee9f0e02e03dc9e;
    classtype:command-and-control;
    sid:2037952; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_08_04, deployment Perimeter, malware_family Win32_Agent_UOI, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_04, reviewed_at 2025_01_06;
)