ET MALWARE Win32/Wacapew.C!ml CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Wacapew.C!ml CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/?cname="; startswith; fast_pattern;
    http.user_agent;
    content:"Go-http-client"; startswith;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|User-Agent|0d 0a|Accept-Encoding|0d 0a 0d 0a|";
    reference:md5,7f939b3ba32224827485168077881948;
    classtype:command-and-control;
    sid:2037777; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_15, deployment Perimeter, malware_family Win32_Wacapew_C_ml, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_15, reviewed_at 2024_12_24;
)