alert dns $HOME_NET any -> any any (msg:"ET MALWARE Cobalt Strike Related Domain in DNS Lookup (hiduwu .com)"; dns.query; content:"hiduwu.com"; nocase; bsize:10; reference:url,thedfirreport.com/2021/12/13/diavol-ransomware/; classtype:domain-c2; sid:2034754; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_12_17, deployment Perimeter, malware_family Cobalt_Strike, malware_family Cobalt_Strike, confidence High, signature_severity Major, updated_at 2021_12_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)