ET WEB_CLIENT Office Requesting .HTA File Likely CVE-2017-0199 Request

Query · suricata

flow:established,to_server;
http.uri;
content:".hta"; nocase; fast_pattern;
http.user_agent;
content:"Microsoft Office"; startswith;
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET WEB_CLIENT Office Requesting .HTA File Likely CVE-2017-0199 Request · Suricata
Esc
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 WEB_CLIENT Office Requesting .HTA File Likely CVE-2017-0199 Request";
    flow:established,to_server;
    http.uri;
    content:".hta"; nocase; fast_pattern;
    http.user_agent;
    content:"Microsoft Office"; startswith;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:cve,2017-0199;
    classtype:trojan-activity;
    sid:2024224; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_04_19, cve CVE_2017_0199, deployment Perimeter, malware_family Exploit_Kit_RIG, performance_impact Low, confidence Medium, signature_severity Major, tag Exploit_kit_RIG, tag CISA_KEV, updated_at 2020_10_09;
)

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