alert dns $HOME_NET any -> any any (msg:"ET MALWARE Maktub Locker Payment Domain"; dns_query; content:"bs7aygotd2rnjl4o"; depth:16; fast_pattern; nocase; reference:md5,74add6536cdcfb8b77d10a1e7be6b9ef; classtype:trojan-activity; sid:2022634; rev:3; metadata:created_at 2016_03_21, confidence High, signature_severity Major, updated_at 2019_08_30;)