ET MALWARE Ducktail CnC Checkin (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Ducktail CnC Checkin (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/^\x2f\w\x2f[a-z0-9]{96}$/";
    urilen:99;
    http.user_agent;
    content:"WindowsPowerShell/"; fast_pattern;
    http.header_names; bsize:22;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|";
    reference:url,x.com/suyog41/status/1875174914128310378;
    reference:md5,19df486249801c08f0efde6a16e135ee;
    classtype:command-and-control;
    sid:2058957; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_01_03, deployment Perimeter, confidence High, signature_severity Major, tag c2, tag Ducktail, updated_at 2025_01_03, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)