alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Turla Kopiluwak User-Agent"; flow:established,to_server; http.user_agent; content:"Mozilla/5.0 (Windows NT 6.1|3b 20|Win64|3b 20|x64)|3b 20|"; reference:url,securelist.com/blog/research/77429/kopiluwak-a-new-javascript-payload-from-turla/; classtype:targeted-activity; sid:2023868; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_02_03, deployment Perimeter, malware_family Turla_Kopiluwak, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_08_04;)