ET MALWARE Possible Compromised Host AnubisNetworks Sinkhole Cookie Value btst

Query · suricata

flow:established,to_client;
http.cookie;
content:"btst="; startswith; fast_pattern;
pcre:"/^[a-f0-9]{32}\x7c\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\x7c/R";
threshold:type limit, count 1, seconds 300, track by_src;
Raw source ET MALWARE Possible Compromised Host AnubisNetworks Sinkhole Cookie Value btst · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Possible Compromised Host AnubisNetworks Sinkhole Cookie Value btst";
    flow:established,to_client;
    http.cookie;
    content:"btst="; startswith; fast_pattern;
    pcre:"/^[a-f0-9]{32}\x7c\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\x7c/R";
    threshold:type limit, count 1, seconds 300, track by_src;
    classtype:trojan-activity;
    sid:2037771; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2022_07_15, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_19, reviewed_at 2023_09_01;
)

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