ET MALWARE Base64 Encoded Executable Within JPG File

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Base64 Encoded Executable Within JPG File";
    flow:established,to_client;
    http.response_body;
    content:"|FF|"; startswith;
    pcre:"/^(?:\xd8|\xe0)/R";
    content:"|FF D9|"; distance:0;
    content:"TVqQAAMAA"; distance:0; fast_pattern;
    classtype:trojan-activity;
    sid:2072357; rev:1;
    metadata:affected_product Windows_Client, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_10_05, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, updated_at 2026_10_05, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;
    target:dest_ip;
)