alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE SharpPanda APT Maldoc Activity"; flow:established,to_server; http.uri; content:"/Apricot"; startswith; http.user_agent; content:"Office"; http.host; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/"; http.header_names; content:!"Referer"; reference:url,research.checkpoint.com/2021/chinese-apt-group-targets-southeast-asian-government-with-previously-unknown-backdoor/; reference:md5,1e9f1746c2dbea0df5017afdf8b94189; classtype:trojan-activity; sid:2033086; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_06_03, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_03;)