alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET SCAN SQLBrute SQL Scan Detected"; flow:to_server,established; content:"AND not exists (select * from master..sysdatabases)"; offset:60; depth:60; reference:url,www.justinclarke.com/archives/2006/03/sqlbrute.html; reference:url,www.darknet.org.uk/2007/06/sqlbrute-sql-injection-brute-force-tool/; classtype:attempted-recon; sid:2009477; rev:4; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, updated_at 2019_09_27;)