ET MALWARE Cobalt Strike C2 Profile (news_indexedimages)

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /news_indexedimages_autrzd/"; startswith; fast_pattern;
content:"&usqp=CAU HTTP/1.1"; endswith;
http.referer;
content:"http://www.google.com"; bsize:21;
http.user_agent;
content:"Mozilla|2f|5|2e|0|20 28|compatible|3b 20|MSIE|20|8|2e|0|3b 20|Windows|20|NT|20|6|2e|1|3b 20|Trident|2f|5|2e|0|29|"; bsize:63;
Raw source ET MALWARE Cobalt Strike C2 Profile (news_indexedimages) · 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 Cobalt Strike C2 Profile (news_indexedimages)";
    flow:established,to_server;
    http.request_line;
    content:"GET /news_indexedimages_autrzd/"; startswith; fast_pattern;
    content:"&usqp=CAU HTTP/1.1"; endswith;
    http.referer;
    content:"http://www.google.com"; bsize:21;
    http.user_agent;
    content:"Mozilla|2f|5|2e|0|20 28|compatible|3b 20|MSIE|20|8|2e|0|3b 20|Windows|20|NT|20|6|2e|1|3b 20|Trident|2f|5|2e|0|29|"; bsize:63;
    reference:md5,8ece22e6b6e564e3cbfb190bcbd5d3b9;
    classtype:command-and-control;
    sid:2033065; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_06_01, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2021_06_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)

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