ET MALWARE BePush/Kilim CnC Beacon

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:".php?type="; fast_pattern;
pcre:"/^(?:update_hash|js|key|arsiv_(?:hash|link))$/R";
http.user_agent;
content:!"Mozilla|2f|";
http.host;
content:!"threatseeker.com";
http.header_names;
content:!"Accept-";
content:!"Referer|0d 0a|";
Raw source ET MALWARE BePush/Kilim 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE BePush/Kilim CnC Beacon";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:".php?type="; fast_pattern;
    pcre:"/^(?:update_hash|js|key|arsiv_(?:hash|link))$/R";
    http.user_agent;
    content:!"Mozilla|2f|";
    http.host;
    content:!"threatseeker.com";
    http.header_names;
    content:!"Accept-";
    content:!"Referer|0d 0a|";
    reference:md5,dad57ec2d5d99b725acc726b0a644c00;
    reference:url,seclists.org/fulldisclosure/2015/Jan/131;
    classtype:command-and-control;
    sid:2021030; rev:7;
    metadata:attack_target Client_Endpoint, created_at 2015_04_30, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_10_28, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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