ET RETIRED Win32/Covagent Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET RETIRED Win32/Covagent Checkin";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/api/push?token=TPRI&msg="; fast_pattern; startswith;
    http.user_agent;
    content:"Go-http-client/"; startswith;
    http.header_names;
    content:"Version|0d 0a|";
    content:!"Referer";
    reference:md5,61e41ce10b04124f590524c79f8a0fe7;
    classtype:trojan-activity;
    sid:2038901; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_19, deployment Perimeter, former_category MALWARE, malware_family Win32_Covagent, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_04_17, reviewed_at 2025_04_17;
)