alert icmp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Gimmiv Infection Ping Inbound"; icode:0; itype:8; dsize:20; content:"abcde12345fghij6789"; classtype:trojan-activity; sid:2008727; rev:3; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_07_26;)