ET MALWARE SillyRAT CnC Server PING Inbound

alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE SillyRAT CnC Server PING Inbound";
    flow:established,to_client;
    flowbits:set,ET.SillyRAT;
    dsize:<32;
    content:")J@NcRfU"; endswith;
    threshold:type limit,count 1,seconds 300,track by_dst;
    reference:url,github.com/hash3liZer/SillyRAT;
    classtype:command-and-control;
    sid:2063514; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Linux, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_07_16, deployment Perimeter, malware_family SillyRat, confidence High, signature_severity Critical, updated_at 2025_07_16, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1095, mitre_technique_name Non_Application_Layer_Protocol;
    target:dest_ip;
)