ET MALWARE SeaDuke CnC Beacon

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php"; endswith;
http.header;
content:"Accept-Encoding|3a 20|identity|0d 0a|Host|3a 20|"; startswith; fast_pattern;
http.cookie;
pcre:"/^[a-zA-Z0-9_-]{2,6}=[a-zA-Z0-9_-]+(?:\x3b\x20[a-zA-Z0-9_-]{2,6}=[a-zA-Z0-9_-]+){1,6}={0,2}?$/";
http.header_names;
content:!"|0d 0a|Accept|0d 0a|";
Raw source ET MALWARE SeaDuke CnC Beacon · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE SeaDuke CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php"; endswith;
    http.header;
    content:"Accept-Encoding|3a 20|identity|0d 0a|Host|3a 20|"; startswith; fast_pattern;
    http.cookie;
    pcre:"/^[a-zA-Z0-9_-]{2,6}=[a-zA-Z0-9_-]+(?:\x3b\x20[a-zA-Z0-9_-]{2,6}=[a-zA-Z0-9_-]+){1,6}={0,2}?$/";
    http.header_names;
    content:!"|0d 0a|Accept|0d 0a|";
    reference:md5,a25ec7749b2de12c2a86167afa88a4dd;
    reference:url,researchcenter.paloaltonetworks.com/2015/07/unit-42-technical-analysis-seaduke/;
    classtype:targeted-activity;
    sid:2021413; rev:6;
    metadata:attack_target Client_Endpoint, created_at 2015_07_15, deployment Perimeter, performance_impact Moderate, signature_severity Major, tag c2, updated_at 2024_04_06, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.