ET MALWARE Cobalt Strike Activity (GET)

Query · suricata

flow:established,to_server;
http.request_line;
content:"GET /s/2MYmbwpSJLZRAtXRgNTAUjJSH6SSoicLPIrQl/field-keywords/"; startswith; fast_pattern;
http.cookie;
content:"PREF=ID="; startswith;
http.header_names;
content:!"|0d 0a|Referer|0d 0a|";
Raw source ET MALWARE Cobalt Strike Activity (GET) · 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 (GET)";
    flow:established,to_server;
    http.request_line;
    content:"GET /s/2MYmbwpSJLZRAtXRgNTAUjJSH6SSoicLPIrQl/field-keywords/"; startswith; fast_pattern;
    http.cookie;
    content:"PREF=ID="; startswith;
    http.header_names;
    content:!"|0d 0a|Referer|0d 0a|";
    reference:md5,aa5e8268e741346c76ebfd1f27941a14;
    reference:url,cert.gov.ua/article/37704;
    classtype:trojan-activity;
    sid:2035508; rev:2;
    metadata:created_at 2022_03_17, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_17;
)

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