alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".html?provider="; fast_pattern; http.cookie; content:"wordpress_"; startswith; http.user_agent; content:"Windows|20|NT|20|7.1|3b 20|"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,b4c716f08907cd4e848bb9ab541dc449; classtype:trojan-activity; sid:2035130; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_02_08, deployment Perimeter, deployment SSLDecrypt, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_25, reviewed_at 2023_08_25;)