alert dns $HOME_NET any -> any any (msg:"ET MALWARE DarkHotel DNS Lookup (apply-wsu.ebizx.net)"; dns.query; content:"apply-wsu.ebizx.net"; depth:19; nocase; endswith; fast_pattern; reference:url,researchcenter.paloaltonetworks.com/2016/08/unit42-fresh-baked-homekit-made-cookles-with-a-darkhotel-overlap/; classtype:targeted-activity; sid:2023059; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_08_15, deployment Perimeter, malware_family DarkHotel, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2020_09_17;)