alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Win32/Petya Conn Check"; flow:established,to_server; urilen:1; http.user_agent; content:"Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/48.0.2564.109 Safari/537.36"; fast_pattern; http.host; content:"myip.com.ua"; bsize:11; http.header_names; content:!"Accept"; content:!"Referer|0d 0a|"; reference:url,twitter.com/V_Baczynski/status/881051849700364288; classtype:trojan-activity; sid:2024443; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_07_05, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2020_08_10;)