ET MALWARE Smurf2 CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Smurf2 CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent;
    content:"Mozilla/5.0";
    http.request_body;
    content:"teststr="; depth:8; nocase; fast_pattern;
    content:"&testval="; nocase; distance:0;
    http.accept;
    content:"??";
    reference:md5,e2d136bb63edc092d2f3d26885b239d9;
    classtype:command-and-control;
    sid:2025168; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_12_21, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_24;
)