ET MALWARE Suspected Sliver DNS CnC

Query · suricata

content:"|00 10 00 01|";
isdataat:!1,relative;
dns.query;
content:"_"; startswith;
pcre:"/^[a-z0-9_]{6}[^a-z0-9_]/R";
content:"_domainkey"; distance:8; fast_pattern;
Raw source ET MALWARE Suspected Sliver DNS CnC · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert dns any any -> any any (
    msg:"ET MALWARE Suspected Sliver DNS CnC";
    content:"|00 10 00 01|";
    isdataat:!1,relative;
    dns.query;
    content:"_"; startswith;
    pcre:"/^[a-z0-9_]{6}[^a-z0-9_]/R";
    content:"_domainkey"; distance:8; fast_pattern;
    reference:url,github.com/BishopFox/sliver;
    classtype:trojan-activity;
    sid:2032936; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2021_05_10, deployment Perimeter, malware_family Sliver, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_19;
)

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