alert dns $HOME_NET any -> any any (msg:"ET MALWARE Magecart CnC Domain Observed in DNS Query"; dns.query; content:"arcdn.site"; nocase; endswith; classtype:trojan-activity; sid:2031101; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_10_26, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_26;)