alert dns $HOME_NET any -> any any (msg:"ET MALWARE ABUSE.CH Ransomware/Cerber Onion Domain Lookup"; dns.query; content:"avsxrcoq2q5fgrw2"; startswith; fast_pattern; nocase; reference:url,ransomwaretracker.abuse.ch; classtype:trojan-activity; sid:2023579; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_12_06, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_13, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)