ET MALWARE GammaLoad CnC Activity (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE GammaLoad CnC Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/joe";
    content:"/josie.ai"; endswith;
    http.content_len; bsize:4;
    content:"7280";
    http.cookie; bsize:8;
    content:"joyfully"; fast_pattern;
    http.user_agent;
    content:"|3a 3a 2f 2e|";
    reference:url,go.recordedfuture.com/hubfs/reports/cta-ru-2024-1205.pdf;
    reference:url,ommunity.emergingthreats.net/t/et-malware-gamaredon-apt-trycloudflare-activity/2327;
    classtype:command-and-control;
    sid:2058994; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_01_06, deployment Perimeter, deployment SSLDecrypt, malware_family GammaLoad, confidence High, signature_severity Critical, updated_at 2025_01_06, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)