alert dns $HOME_NET any -> any any (msg:"ET MALWARE APT28 DealersChoice DNS Lookup (zpfgr .com)"; dns.query; content:"zpfgr.com"; depth:9; nocase; endswith; fast_pattern; reference:url,malware.prevenity.com/2017/01/ataki-na-instytucje-rzadowe-grudzien.html; classtype:targeted-activity; sid:2023762; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_01_24, malware_family APT28_DealersChoice, confidence Medium, signature_severity Major, updated_at 2020_09_17;)