ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.BEACON.[CSBundle NYTIMES Server]

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.BEACON.[CSBundle NYTIMES Server]";
    http.response_line;
    content:"HTTP/1."; depth:7;
    http.header;
    content:"Accept-Ranges|3a 20|bytes";
    content:"Age|3a 20|5806";
    content:"Cache-Control|3a 20|public,max-age=31536000";
    content:"Content-Encoding|3a 20|gzip";
    content:"Content-Length|3a 20|256398";
    content:"Content-Type|3a 20|application/javascript";
    content:"Server|3a 20|UploadServer";
    content:"Vary|3a 20|Accept-Encoding, Fastly-SSL";
    content:"x-api-version|3a 20|F-X";
    content:"x-cache|3a 20|HIT";
    content:"x-Firefox-Spdy|3a 20|h2";
    content:"x-nyt-route|3a 20|vi-assets";
    content:"x-served-by|3a 20|cache-mdw17344-MDW";
    content:"x-timer|3a 20|S1580937960.346550,VS0,VE0"; fast_pattern;
    reference:url,github.com/fireeye/red_team_tool_countermeasures;
    classtype:trojan-activity;
    sid:2031267; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_08, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2020_12_09, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)