alert dns $HOME_NET any -> any any (msg:"ET MALWARE DNS Query to Jaff Domain (fkksjobnn43 . org)"; dns.query; content:"fkksjobnn43.org"; depth:15; fast_pattern; endswith; nocase; reference:md5,924c84415b775af12a10366469d3df69; reference:url,blog.dynamoo.com/2017/05/malware-spam-with-nmpdf-attachment.html; classtype:trojan-activity; sid:2024289; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_05_11, deployment Perimeter, malware_family Jaff_Ransomware, performance_impact Low, confidence Medium, signature_severity Major, tag Ransomware, updated_at 2020_09_17;)