alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed GandCrab Ransomware Domain (carder .bit in DNS Lookup)"; threshold:type both, track by_src, count 1, seconds 120; dns.query; content:"carder.bit"; endswith; reference:md5,9faf6dedd3e0cd018d2e45bc8855bd4a; classtype:trojan-activity; sid:2025546; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_04_30, deployment Perimeter, malware_family GandCrab, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_16, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)