alert dns $HOME_NET any -> any any (msg:"ET DELETED ABUSE.CH Ransomware Domain Detected"; dns.query; content:"rrcspgfghsjnklts"; depth:16; fast_pattern; nocase; reference:url,ransomwaretracker.abuse.ch; classtype:trojan-activity; sid:2022777; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_05_03, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2024_11_27, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)