alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query For TURNEDUP.Backdoor CnC (googlmail)"; threshold:type both, track by_src, count 1, seconds 5; dns.query; content:"googlmail.net"; depth:13; fast_pattern; endswith; nocase; reference:url,www.fireeye.com/blog/threat-research/2017/09/apt33-insights-into-iranian-cyber-espionage.html; classtype:command-and-control; sid:2024732; rev:7; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_20, deployment Perimeter, malware_family TURNEDUP, malware_family StoneDrill, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2024_09_16, reviewed_at 2024_09_16;)