alert dns $HOME_NET any -> any any (msg:"ET MALWARE TA406 Related Domain in DNS Lookup"; dns.query; bsize:15; content:"downwarding.com"; nocase; reference:md5,d2ed41719424bb024535afa1b2d17f3a; classtype:domain-c2; sid:2048039; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_09_12, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_12, reviewed_at 2024_04_15;)