ET WEB_SERVER ASPXSPY - Manic Menagerie Variant Activity M1

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".aspx"; endswith;
http.cookie;
content:"Backdoor=";
pcre:"/^[a-f0-9]{32}/R";
http.request_body;
content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22 5f 5f|EVENTTARGET|22 0d 0a 0d 0a|Bin_"; fast_pattern;
content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22 5f 5f|FILE|22 0d 0a 0d 0a|";
Raw source ET WEB_SERVER ASPXSPY - Manic Menagerie Variant Activity M1 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_SERVER ASPXSPY - Manic Menagerie Variant Activity M1";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".aspx"; endswith;
    http.cookie;
    content:"Backdoor=";
    pcre:"/^[a-f0-9]{32}/R";
    http.request_body;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22 5f 5f|EVENTTARGET|22 0d 0a 0d 0a|Bin_"; fast_pattern;
    content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22 5f 5f|FILE|22 0d 0a 0d 0a|";
    reference:md5,2ef7bb0d9763cf38977182d65173d1b0;
    reference:url,unit42.paloaltonetworks.com/manic-menagerie-targets-web-hosting-and-it/;
    classtype:trojan-activity;
    sid:2046753; rev:1;
    metadata:affected_product Microsoft_IIS, attack_target Web_Server, created_at 2023_07_07, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_07_07;
)

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