alert tcp $HOME_NET any -> $EXTERNAL_NET [25,587] (msg:"ET MALWARE Trojan.SpamBanker Report via SMTP"; flow:established,to_server; content:"From|3a|"; content:"Subject|3a 20|Keylogger"; fast_pattern; nocase; content:"X-Library|3a 20|Indy"; pcre:"/^Keylogger\r$/m"; reference:md5,9c1aac05bd3212a3abcd7cce9c6c4c77; classtype:trojan-activity; sid:2019931; rev:2; metadata:created_at 2014_12_13, signature_severity Major, updated_at 2019_10_08;)