ET WEB_SPECIFIC_APPS Citrix CVE-2024-6235 Post-Exploitation Activity (Admin Account Creation)

Query · suricata

flow:established,to_server;
xbits:isset,ET.CVE-2024-6235,track ip_dst;
http.method;
content:"POST";
http.uri; bsize:24;
content:"/nitro/v1/config/mpsuser"; fast_pattern;
http.header;
content:"NITRO_WEB_APPLICATION|3a 20|true";
content:"rand_key|3a 20|";
pcre:"/^[a-fA-F0-9]{32}/R";
http.cookie;
content:"logged_in_user_name|3d|nsroot|3b|";
content:"SESSID|3d 23 23|";
pcre:"/^[a-fA-F0-9]{60}/R";
http.request_body;
content:"object|3d|";
content:"mpsuser";
content:"name"; distance:0;
content:"groups";
content:"owner"; distance:0;
target:dest_ip;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

  • correlates · Suricata xbits ET.CVE-2024-6235
    A shared condition, not a detection — not indexed on this site.
Raw source ET WEB_SPECIFIC_APPS Citrix CVE-2024-6235 Post-Exploitation Activity (Admin Account Creation) · 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 Citrix CVE-2024-6235 Post-Exploitation Activity (Admin Account Creation)";
    flow:established,to_server;
    xbits:isset,ET.CVE-2024-6235,track ip_dst;
    http.method;
    content:"POST";
    http.uri; bsize:24;
    content:"/nitro/v1/config/mpsuser"; fast_pattern;
    http.header;
    content:"NITRO_WEB_APPLICATION|3a 20|true";
    content:"rand_key|3a 20|";
    pcre:"/^[a-fA-F0-9]{32}/R";
    http.cookie;
    content:"logged_in_user_name|3d|nsroot|3b|";
    content:"SESSID|3d 23 23|";
    pcre:"/^[a-fA-F0-9]{60}/R";
    http.request_body;
    content:"object|3d|";
    content:"mpsuser";
    content:"name"; distance:0;
    content:"groups";
    content:"owner"; distance:0;
    reference:url,attackerkb.com/topics/7zebEgmGLs/cve-2024-6235;
    reference:cve,2024-6235;
    classtype:trojan-activity;
    sid:2061845; rev:1;
    metadata:affected_product Citrix, attack_target Web_Server, tls_state plaintext, created_at 2025_04_24, cve CVE_2024_6235, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Unauthorized_Account_Creation, updated_at 2025_04_24;
    target:dest_ip;
)

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