alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query to TA444 Domain (waitingfor .cfd)"; dns.query; bsize:14; content:"waitingfor.cfd"; nocase; reference:url,twitter.com/tiresearch1/status/1701155845608964391; classtype:trojan-activity; sid:2047998; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_09_11, deployment Perimeter, confidence High, signature_severity Major, tag TA444, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_11, reviewed_at 2024_01_26;)