alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Pony DLL Download"; flow:established,to_server; http.uri; content:"/pm"; pcre:"/^\d?\.dll$/R"; http.request_line; content:".dll HTTP/1."; fast_pattern; http.header_names; content:!"Referer|0d 0a|"; content:!"Cookie|0d 0a|"; reference:md5,62e7a146079f99ded1a6b8f2db08ad18; classtype:trojan-activity; sid:2022939; rev:7; metadata:affected_product MS_Office, attack_target Client_Endpoint, created_at 2016_07_01, deployment Perimeter, malware_family MalDocGeneric, performance_impact Moderate, confidence Medium, signature_severity Major, tag MalDoc, updated_at 2024_04_08;)