ET INFO BusyBox Banner Observed

Query · suricata

flow:established,to_client;
content:"busybox v"; fast_pattern; nocase;
pcre:"/^.*(?:multi-call\x20binary|built-in\x20shell)?/R";
target:src_ip;
Raw source ET INFO BusyBox Banner Observed · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET INFO BusyBox Banner Observed";
    flow:established,to_client;
    content:"busybox v"; fast_pattern; nocase;
    pcre:"/^.*(?:multi-call\x20binary|built-in\x20shell)?/R";
    reference:url,busybox.net;
    classtype:misc-activity;
    sid:2064198; rev:1;
    metadata:affected_product Any, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_08_28, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Informational, updated_at 2025_08_28;
    target:src_ip;
)

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