alert dns $HOME_NET any -> any any (msg:"ET MALWARE Ransomware Decryptor Domain in DNS Query (decryptor .top)"; dns.query; content:"decryptor.top"; nocase; bsize:13; reference:url,tria.ge/191216-4rcmytrrka; classtype:trojan-activity; sid:2033201; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_06_29, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_19, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)