ET MALWARE Win32/SystemHijack.gen CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/SystemHijack.gen CnC Checkin";
    flow:established,to_server;
    http.request_line;
    content:"GET|20|/index.php|20|"; startswith;
    http.user_agent;
    content:"DSNF_2016="; fast_pattern;
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Connection|0d 0a|Host|0d 0a 0d 0a|"; startswith;
    reference:md5,b41090a1804dfd518f93aa1ca1382e69;
    classtype:command-and-control;
    sid:2037847; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_28, deployment Perimeter, malware_family Win32_SystemHijack_gen, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_28, reviewed_at 2024_12_24;
)