alert tcp $HOME_NET any -> any any (msg:"ET DELETED Kaiten IRCbotnet Response"; flow:established; flowbits:isset,irc.start; content:"NOTICE|20|"; content:"|20 3A|"; within:32; pcre:"/\x20\x3A(Receiving\x20file.\x0A|Saved\x20as\x20|Spoofs\x3A\x20|Kaiten\x20wa\x20goraku|Current\x20status\x20is\x3a\x20|Removed\x20all\x20spoofs|Packeting\x20|Panning\x20|Tsunami\x20heading\x20for\x20|Unknowing\x20|Killing\x20pid\x20)/"; reference:url,en.wikipedia.org/wiki/IRC_bot; classtype:trojan-activity; sid:2007622; rev:4; metadata:created_at 2010_07_30, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)