alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Related Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/submit.php?id="; startswith; http.user_agent; content:"|3b 20|MANM|3b 20|MANM)"; endswith; http.host; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/"; http.header_names; content:!"Referer"; content:!"Cookie"; reference:url,unit42.paloaltonetworks.com/cobalt-strike-malleable-c2-profile/; classtype:trojan-activity; sid:2035547; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_03_21, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2022_03_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)