ET SCADA [nsacyber/ELITEWOLF] Schweitzer Engineering Laboratories SEL-series Dropbear SSH Banner - Possible SSH Login attempt

Query · suricata

flow:established,to_client;
content:"SSH-2.0-dropbear_2016.74"; fast_pattern;
threshold:type limit, track by_dst, seconds 500, count 1;
target:src_ip;
Raw source ET SCADA [nsacyber/ELITEWOLF] Schweitzer Engineering Laboratories SEL-series Dropbear SSH Banner - Possible SSH Login attempt · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert ssh $HOME_NET any -> any any (
    msg:"ET SCADA [nsacyber/ELITEWOLF] Schweitzer Engineering Laboratories SEL-series Dropbear SSH Banner - Possible SSH Login attempt";
    flow:established,to_client;
    content:"SSH-2.0-dropbear_2016.74"; fast_pattern;
    threshold:type limit, track by_dst, seconds 500, count 1;
    reference:url,github.com/nsacyber/ELITEWOLF;
    classtype:suspicious-login;
    sid:2048645; rev:1;
    metadata:affected_product Schweitzer_Engineering_Laboratories_SEL_Series, attack_target ICS, created_at 2023_10_18, deployment Perimeter, deployment Internal, performance_impact Low, confidence Low, signature_severity Minor, updated_at 2023_10_18, reviewed_at 2023_10_18;
    target:src_ip;
)

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