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<h2 class="title"><a id="network-connection-via-certutil"></a>Network Connection via Certutil<a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/stack-docs/edit/7.8/docs/en/siem/detections/prebuilt-rules/rule-details/network-connection-via-certutil.asciidoc">edit</a></h2>
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<p>Identifies <code class="literal">certutil.exe</code> making a network connection. Adversaries could abuse
<code class="literal">certutil.exe</code> to download a certificate or malware from a remote URL.</p>
<p><span class="strong strong"><strong>Rule type</strong></span>: query</p>
<p><span class="strong strong"><strong>Rule indices</strong></span>:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
winlogbeat-*
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Severity</strong></span>: low</p>
<p><span class="strong strong"><strong>Risk score</strong></span>: 21</p>
<p><span class="strong strong"><strong>Runs every</strong></span>: 5 minutes</p>
<p><span class="strong strong"><strong>Searches indices from</strong></span>: now-6m (<a href="/guide/en/elasticsearch/reference/7.8/common-options.html#date-math" class="ulink" target="_top">Date Math format</a>, see also <a class="xref" href="rules-ui-create.html#rule-schedule"><code class="literal">Additional look-back time</code></a>)</p>
<p><span class="strong strong"><strong>Maximum signals per execution</strong></span>: 100</p>
<p><span class="strong strong"><strong>Tags</strong></span>:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Elastic
</li>
<li class="listitem">
Windows
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Version</strong></span>: 1</p>
<p><span class="strong strong"><strong>Added (Elastic Stack release)</strong></span>: 7.7.0</p>
<div class="section">
<div class="titlepage"><div><div>
<h3 class="title"><a id="_rule_query_52"></a>Rule query<a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/stack-docs/edit/7.8/docs/en/siem/detections/prebuilt-rules/rule-details/network-connection-via-certutil.asciidoc">edit</a></h3>
</div></div></div>
<div class="pre_wrapper lang-js">
<pre class="programlisting prettyprint lang-js">process.name:certutil.exe and event.action:"Network connection
detected (rule: NetworkConnect)" and not destination.ip:(10.0.0.0/8 or
172.16.0.0/12 or 192.168.0.0/16)</pre>
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<h3 class="title"><a id="_threat_mapping_40"></a>Threat mapping<a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/stack-docs/edit/7.8/docs/en/siem/detections/prebuilt-rules/rule-details/network-connection-via-certutil.asciidoc">edit</a></h3>
</div></div></div>
<p><span class="strong strong"><strong>Framework</strong></span>: MITRE ATT&CK<sup>TM</sup></p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
<p>Tactic:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Command and Control
</li>
<li class="listitem">
ID: TA0011
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/tactics/TA0011/" class="ulink" target="_top">https://attack.mitre.org/tactics/TA0011/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Remote File Copy
</li>
<li class="listitem">
ID: T1105
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1105/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1105/</a>
</li>
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