alert dns $HOME_NET any -> any any (msg:"ET MALWARE BKransomware Domain (3whyfziey2vr41yq in DNS Lookup)"; dns.query; content:"3whyfziey2vr41yq"; depth:16; reference:md5,892da86e60236c5aaf26e5025af02513; classtype:trojan-activity; sid:2025559; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_05_07, deployment Perimeter, malware_family Ransomware, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_18, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)