ET MALWARE Win32/Grandoreiro Loader Checkin Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Grandoreiro Loader Checkin Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent;
    content:"Clever Internet Suite";
    http.uri;
    content:"/MX/";
    content:".php?"; distance:0;
    content:"&OUT=&PG=&SO="; distance:0;
    content:"&AV="; distance:0;
    content:"&US="; distance:0;
    content:"&PC="; distance:0;
    content:"&EXE="; distance:0; fast_pattern;
    content:"&ST=";
    content:"&DTF="; distance:0;
    reference:md5,6433f9af678fcd387983d7afafae2af2;
    reference:url,www.zscaler.com/blogs/security-research/grandoreiro-banking-trojan-new-ttps-targeting-various-industry-verticals;
    classtype:trojan-activity;
    sid:2037002; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_06_15, deployment Perimeter, malware_family Grandoreiro, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_13;
)