alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query to Jaff Domain (comboratiogferrdto . com)"; dns_query; content:"comboratiogferrdto.com"; depth:22; fast_pattern; endswith; nocase; reference:md5,51cf3452feb218a4b1295cebf3b2130e; reference:url,blog.dynamoo.com/2017/05/malware-spam-with-nmpdf-attachment.html; classtype:trojan-activity; sid:2024341; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_31, deployment Perimeter, malware_family Jaff_Ransomware, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2019_09_28;)