alert dns $HOME_NET any -> any any (msg:"ET MALWARE KHRAT DNS Lookup (upload-dropbox .com)"; dns.query; dotprefix; content:".upload-dropbox.com"; nocase; endswith; reference:url,researchcenter.paloaltonetworks.com/2017/08/unit42-updated-khrat-malware-used-in-cambodia-attacks/; classtype:trojan-activity; sid:2024658; rev:8; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_04, deployment Perimeter, malware_family KHRAT, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2023_12_13, reviewed_at 2023_12_13;)