alert dns $HOME_NET any -> any any (msg:"ET MALWARE Turla Snake OSX DNS Lookup (car-service .effers.com)"; dns.query; content:"car-service.effers.com"; depth:22; nocase; endswith; fast_pattern; reference:url,blog.fox-it.com/2017/05/03/snake-coming-soon-in-mac-os-x-flavour/; classtype:targeted-activity; sid:2024271; rev:5; metadata:attack_target Client_Endpoint, created_at 2017_05_04, deployment Perimeter, malware_family Turla, malware_family Snake, performance_impact Low, confidence Medium, signature_severity Critical, tag APT, tag RUAPT, updated_at 2020_09_17;)