ET MALWARE Possible Win32/Petya Conn Check

Query · suricata

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|";
Raw source ET MALWARE Possible Win32/Petya Conn Check · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
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;
)

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