alert tcp $EXTERNAL_NET any -> $SQL_SERVERS 139 (msg:"GPL SQL xp_cmdshell program execution"; flow:to_server,established; content:"x|00|p|00|_|00|c|00|m|00|d|00|s|00|h|00|e|00|l|00|l|00|"; offset:32; nocase; classtype:attempted-user; sid:2100681; rev:7; metadata:created_at 2010_09_23, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)