alert dns $HOME_NET any -> any any (msg:"ET MALWARE CDT Credphish/Netwire Campaign DNS Lookup"; dns.query; content:"secuerserver.com"; depth:16; nocase; endswith; fast_pattern; reference:url,citizenlab.ca/2017/07/insider-information-an-intrusion-campaign-targeting-chinese-language-news-sites; classtype:trojan-activity; sid:2024477; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_07_18, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2020_09_17;)