ET MALWARE Cobalt Strike Activity (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/jquery-3.3.2.min.js?__cfduid="; startswith; fast_pattern;
http.user_agent;
content:"Mozilla/5.0 (Windows NT 6.3|3b 20|Trident/7.0|3b 20|rv:11.0) like Gecko";
http.header;
content:"Referer|3a 20|http|3a|//code.jquery.com/|0d 0a|";
Raw source ET MALWARE Cobalt Strike Activity (POST) · 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 Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/jquery-3.3.2.min.js?__cfduid="; startswith; fast_pattern;
    http.user_agent;
    content:"Mozilla/5.0 (Windows NT 6.3|3b 20|Trident/7.0|3b 20|rv:11.0) like Gecko";
    http.header;
    content:"Referer|3a 20|http|3a|//code.jquery.com/|0d 0a|";
    reference:url,twitter.com/Unit42_Intel/status/1498802280992227330?s=20&t=iDY6vP8NF3muXpkS4ERenw;
    classtype:trojan-activity;
    sid:2035376; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_02, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2022_03_02, reviewed_at 2024_06_26, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)

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