alert dns $HOME_NET any -> any any (msg:"ET MALWARE Scarlet Mimic DNS Lookup 40"; dns_query; content:"vip.yahoo.cloudns.info"; depth:22; nocase; endswith; fast_pattern; reference:url,researchcenter.paloaltonetworks.com/2016/01/scarlet-mimic-years-long-espionage-targets-minority-activists/; classtype:trojan-activity; sid:2022450; rev:4; metadata:created_at 2016_01_27, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_09_28;)