alert dns $HOME_NET any -> any any (msg:"ET MALWARE Qadars CnC DNS Lookup (zkdef09i7ola.net)"; dns.query; content:"zkdef09i7ola.net"; depth:16; fast_pattern; endswith; nocase; classtype:command-and-control; sid:2023932; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_16, deployment Perimeter, malware_family Qadars, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2020_09_17;)