alert dns $HOME_NET any -> any any (msg:"ET MALWARE Ransomware Locky .onion Payment Domain"; dns_query; content:"6dtxgqam4crv6rr6"; nocase; depth:16; reference:md5,b06d9dd17c69ed2ae75d9e40b2631b42; classtype:trojan-activity; sid:2022548; rev:2; metadata:attack_target Client_Endpoint, created_at 2016_02_18, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, updated_at 2019_07_26, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)