alert dns $HOME_NET any -> any any (msg:"ET MALWARE Scieron DNS Lookup (sorry.ns2.name)"; dns_query; content:"sorry.ns2.name"; depth:14; nocase; endswith; fast_pattern; reference:url,symantec.com/connect/blogs/scarab-attackers-took-aim-select-russian-targets-2012; classtype:trojan-activity; sid:2020271; rev:4; metadata:created_at 2015_01_23, confidence Medium, signature_severity Major, updated_at 2019_09_28;)