alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Cobalt Strike Malleable C2 Profile wordpress_ Cookie Test";
flow:established,to_server;
http.cookie;
content:"wordpress"; fast_pattern;
pcre:"/^_?=?(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/";
http.header_names;
content:!"Referer";
reference:url,thedfirreport.com/2021/06/20/from-word-to-lateral-movement-in-1-hour/;
classtype:trojan-activity;
sid:2033158; rev:2;
metadata:attack_target Client_Endpoint, created_at 2021_06_22, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2024_04_25, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;
)