alert smb $HOME_NET any -> any any (msg:"ET EXPLOIT Possible ETERNALROMANCE MS17-010"; flow:from_server,established; content:"|FF|SMB|25 05 00 00 80|"; offset:4; depth:9; content:"LSbfLScnLSepLSlfLSmf"; distance:0; fast_pattern; content:"LSrfLSsrLSscLSblLSss"; within:20; content:"LSshLStrLStcLSopLScd"; within:20; flowbits:set,ETPRO.ETERNALROMANCE; classtype:trojan-activity; sid:2024208; rev:1; metadata:attack_target SMB_Server, created_at 2017_04_17, deployment Internal, confidence Medium, signature_severity Critical, updated_at 2019_07_26;)