alert dns $HOME_NET any -> any any (msg:"ET MALWARE CloudAtlas APT Related Domain in DNS Lookup"; dns.query; bsize:14; content:"host-tools.net"; nocase; reference:md5,a51d18cc42a9ac76d331913049cb0ffc; reference:url,twitter.com/t3ft3lb/status/1651154256294977537; classtype:domain-c2; sid:2045291; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_05_02, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_27;)