ET EXPLOIT_KIT Coruna Device Fingerprinting M4

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri; bsize:2;
content:"/e";
http.header;
content:"x-u|3a 20|fid="; fast_pattern;
Raw source ET EXPLOIT_KIT Coruna Device Fingerprinting M4 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT Coruna Device Fingerprinting M4";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri; bsize:2;
    content:"/e";
    http.header;
    content:"x-u|3a 20|fid="; fast_pattern;
    reference:url,iverify.io/blog/coruna-inside-the-nation-state-grade-ios-exploit-kit-we-ve-been-tracking;
    classtype:trojan-activity;
    sid:2068091; rev:1;
    metadata:affected_product iOS, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_03_09, deployment Perimeter, confidence Medium, signature_severity Major, tag Exploit_Kit, tag c2, tag Coruna, updated_at 2026_03_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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