alert dns $HOME_NET any -> any any (msg:"ET MALWARE APT41 CnC Domain (www .affice366 .com) in DNS Lookup"; dns.query; content:"www.affice366.com"; nocase; bsize:17; reference:url,www.trendmicro.com/en_us/research/22/k/hack-the-real-box-apt41-new-subgroup-earth-longzhi.html; classtype:domain-c2; sid:2039767; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_11_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_23, reviewed_at 2024_09_23;)