ET HUNTING Suspicious User-Agent String Observed (IOT)

Query · suricata

flow:established,to_server;
http.user_agent; bsize:3;
content:"iot"; nocase; fast_pattern;
target:src_ip;
Raw source ET HUNTING Suspicious User-Agent String Observed (IOT) · 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 HUNTING Suspicious User-Agent String Observed (IOT)";
    flow:established,to_server;
    http.user_agent; bsize:3;
    content:"iot"; nocase; fast_pattern;
    reference:url,blog.sekoia.io/a-glimpse-into-the-quad7-operators-next-moves-and-associated-botnets/;
    classtype:trojan-activity;
    sid:2064289; rev:1;
    metadata:affected_product IoT, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_09_04, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_04;
    target:src_ip;
)

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