alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Valyria Maldoc Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/naw15?"; fast_pattern; pcre:"/^(?:id|tfzT)=/R"; http.header_names; content:!"Referer"; reference:md5,0c4578dac4ae278beabbfe18a8c37efb; reference:md5,5154a6f3a5c93337a8a390e63b1448f8; classtype:trojan-activity; sid:2032343; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_03_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_29;)