alert tcp any any -> [$HOME_NET,$SQL_SERVERS] 1433 (msg:"ET MALWARE MSSQL maggie backdoor whoami Query Observed"; flow:established,to_server; content:"e|00|x|00|e|00|c"; nocase; content:"m|00|a|00|g|00|g|00|i|00|e|00 20 00 27 00|E|00|x|00|e|00|c|00 20 00|w|00|h|00|o|00|a|00|m|00|i|00 27 00 3b 00|"; nocase; fast_pattern; endswith; reference:url,medium.com/@DCSO_CyTec/mssql-meet-maggie-898773df3b01; classtype:trojan-activity; sid:2039186; rev:2; metadata:affected_product Microsoft_SQL_Server, attack_target SQL_Server, created_at 2022_10_12, deployment Perimeter, deployment Internal, deployment Datacenter, malware_family maggie, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_14;)