alert dns $HOME_NET any -> any any (msg:"ET MALWARE ShellCrew.APT StreamEx DNS Lookup 26"; dns.query; content:"wwwgooglewww.com"; depth:16; nocase; endswith; fast_pattern; reference:url,www.cylance.com/shell-crew-variants-continue-to-fly-under-big-avs-radar; classtype:targeted-activity; sid:2023993; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_17, deployment Perimeter, malware_family APT_ShellCrew, malware_family StreamEx, confidence Medium, signature_severity Major, updated_at 2020_09_17;)