alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Unknown DPRK Threat Actor Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/ccom"; startswith; pcre:"/^(?:[1-3]?)\/download\.php\?filename=ccom/R"; http.host; content:".atwebpages.com"; endswith; reference:url,asec.ahnlab.com/ko/26183; reference:md5,833794f663ddecd3533c661c9ac5fef6; reference:md5,857a0eb7dcd9c63f4474a069012a3389; classtype:trojan-activity; sid:2033708; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_08_11, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_11;)