alert ftp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Mini/Cosmic Duke variant FTP upload"; flow:established,to_server; content:"STOR "; pcre:"/^[A-F0-9]{48}\.bin\r\n/R"; content:".bin|0d 0a|"; fast_pattern; reference:url,f-secure.com/weblog/archives/00002780.html; classtype:targeted-activity; sid:2020158; rev:3; metadata:created_at 2015_01_08, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;)