alert dns $HOME_NET any -> any any (msg:"ET MALWARE Win32/Teslacrypt Ransomware .onion domain (7hwr34n18.com)"; dns.query; content:"7hwr34n18.com"; nocase; endswith; reference:url,en.wikipedia.org/wiki/Tor_(anonymity_network); classtype:trojan-activity; sid:2020844; rev:8; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_04_06, deployment Perimeter, malware_family TeslaCrypt, signature_severity Major, tag DNS_Onion_Query, tag Ransomware, updated_at 2020_09_15, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)