ET INFO Simplehelp Remote Administration Suite Default SSL Certificate Observed

Query · suricata

flow:established,to_client;
tls.cert_issuer;
content:"C=US, ST=US, L=US, O=Remote Access, OU=Administration, CN=localhost"; fast_pattern;
threshold:type limit,seconds 300,count 1,track by_src;
Raw source ET INFO Simplehelp Remote Administration Suite Default SSL Certificate Observed · 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 tls $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET INFO Simplehelp Remote Administration Suite Default SSL Certificate Observed";
    flow:established,to_client;
    tls.cert_issuer;
    content:"C=US, ST=US, L=US, O=Remote Access, OU=Administration, CN=localhost"; fast_pattern;
    threshold:type limit,seconds 300,count 1,track by_src;
    reference:url,simple-help.com;
    classtype:misc-activity;
    sid:2049806; rev:1;
    metadata:created_at 2023_12_20, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_20;
)

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