alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE DPRK APT Related Maldoc Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:".exe_svchost.exe_"; fast_pattern; content:"ENTER"; distance:0; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,twitter.com/souiten/status/1519167359918911488; reference:md5,1dd007b44034bb3ce127b553873171e5; classtype:trojan-activity; sid:2036390; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_04_27, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_26;)