ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile M6

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /jquery-3.3.2.slim.min.js HTTP/1.1"; fast_pattern;
http.accept;
content:"text/html,application/xhtml+xml,application/xml|3b|q=0.9,*/*|3b|q=0.8"; bsize:63;
http.accept_enc;
content:"gzip, deflate"; bsize:13;
http.header_names;
content:"|0d 0a|Accept|0d 0a|Accept-Language|0d 0a|Referer|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a 0d 0a|";
Raw source ET MALWARE Cobalt Strike Malleable C2 JQuery Custom Profile M6 · Suricata
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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 Malleable C2 JQuery Custom Profile M6";
    flow:established,to_server;
    http.request_line;
    content:"GET /jquery-3.3.2.slim.min.js HTTP/1.1"; fast_pattern;
    http.accept;
    content:"text/html,application/xhtml+xml,application/xml|3b|q=0.9,*/*|3b|q=0.8"; bsize:63;
    http.accept_enc;
    content:"gzip, deflate"; bsize:13;
    http.header_names;
    content:"|0d 0a|Accept|0d 0a|Accept-Language|0d 0a|Referer|0d 0a|Accept-Encoding|0d 0a|User-Agent|0d 0a 0d 0a|";
    reference:url,ics-cert.kaspersky.com/publications/reports/2022/06/27/attacks-on-industrial-control-systems-using-shadowpad/;
    reference:md5,e912f273e629bf974a29213b6427d02b;
    classtype:trojan-activity;
    sid:2037154; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_06_29, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2022_06_29, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)

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