ET WEB_SPECIFIC_APPS ASUS asusrouter-- User-Agent And asus_token Cookie Null Byte Authentication Bypass Attempt

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.user_agent; bsize:12;
content:"asusrouter|2d 2d|"; fast_pattern;
http.cookie;
content:"asus_token|3d 00|";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS ASUS asusrouter-- User-Agent And asus_token Cookie Null Byte Authentication Bypass Attempt · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> $HOME_NET any (
    msg:"ET WEB_SPECIFIC_APPS ASUS asusrouter-- User-Agent And asus_token Cookie Null Byte Authentication Bypass Attempt";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent; bsize:12;
    content:"asusrouter|2d 2d|"; fast_pattern;
    http.cookie;
    content:"asus_token|3d 00|";
    reference:url,www.labs.greynoise.io/grimoire/2025-03-28-ayysshush/;
    classtype:attempted-admin;
    sid:2062609; rev:1;
    metadata:affected_product Asus, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_05_28, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2025_05_28, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.