alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query to TA444 Domain (docs-send .online)"; dns.query; content:"docs-send.online"; nocase; bsize:16; classtype:trojan-activity; sid:2045647; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_05_11, deployment Perimeter, deprecation_reason Age, confidence High, signature_severity Major, tag TA444, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_08_28, reviewed_at 2024_08_28;)