ET MALWARE TickGroup BROLER.F CnC Check-in

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE TickGroup BROLER.F CnC Check-in";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/index.php?";
    content:!"&"; distance:0;
    content:"=google"; endswith; fast_pattern;
    http.request_body;
    pcre:"/^[a-zA-Z/+=]$/";
    http.content_len;
    content:"72";
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|Cache-Control|0d 0a 0d 0a|"; depth:53; endswith;
    reference:url,documents.trendmicro.com/assets/pdf/Operation-ENDTRADE-TICKs-Multistage-Backdoors-for-Attacking-Industries-and-Stealing-Classified-Data.pdf;
    reference:md5,285e25e31b498dd1c0827286e9b44cfe;
    classtype:command-and-control;
    sid:2029092; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_04, deployment Perimeter, performance_impact Significant, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_04;
)