alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Antifulai.APT CnC Beacon 1"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?secue="; fast_pattern; content:"&pro="; content:"|2c|"; distance:0; http.header_names; content:!"Referer|0d 0a|"; reference:url,secureworks.com/resources/blog/research/apt-campaign-leverages-the-cueisfry-trojan-and-microsoft-word-vulnerability-cve-2014-1761/; reference:md5,1c29b24d4d4ef7568f519c470b51bbed; classtype:targeted-activity; sid:2018631; rev:6; metadata:attack_target Client_Endpoint, created_at 2014_05_20, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_09_24, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)