alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE BOT - potential DDoS command (2)"; flowbits:isset,is_proto_irc; flow:established,from_server; content:"ddos"; nocase; pcre:"/ddos\.(phat(icmp|syn|wonk)|stop|(syn|udp|http)flood|targa3|(syn|ack|random) ([0-9]{1,3}\.){3}[0-9]{1,3})/i"; classtype:trojan-activity; sid:2003132; rev:7; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_07_26;)