alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to TA444 Domain (nbright .best)"; dns.query; dotprefix; content:".nbright.best"; nocase; endswith; reference:url,twitter.com/TLP_R3D/status/1649147042680172571; reference:url,storage.pardot.com/838563/1676629189Mljyft19/CTI_Advisory_Undetected_North_Korean_Malware_A_Looming_Threat_to_Finan.pdf; classtype:domain-c2; sid:2045109; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_23, deployment Perimeter, deprecation_reason Age, malware_family TA444, performance_impact Low, confidence High, signature_severity Major, tag TA444, updated_at 2023_08_21, reviewed_at 2023_08_21, former_sid 2853797;)