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<h2 class="title"><a id="interactive-terminal-spawned-via-perl"></a>Interactive Terminal Spawned via Perl<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/interactive-terminal-spawned-via-perl.asciidoc">edit</a></h2>
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<p>Identifies when a terminal (<code class="literal">tty</code>) is spawned via Perl. Attackers may upgrade a
simple reverse shell to a fully interactive <code class="literal">tty</code> after obtaining initial
access to a host.</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">
auditbeat-*
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Severity</strong></span>: high</p>
<p><span class="strong strong"><strong>Risk score</strong></span>: 73</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">
Linux
</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>: 7.8.0</p>
<div class="section">
<div class="titlepage"><div><div>
<h3 class="title"><a id="_rule_query_34"></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/interactive-terminal-spawned-via-perl.asciidoc">edit</a></h3>
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<div class="pre_wrapper lang-js">
<pre class="programlisting prettyprint lang-js">event.action:executed and process.name:perl and process.args:("exec
\"/bin/sh\";" or "exec \"/bin/dash\";" or "exec \"/bin/bash\";")</pre>
</div>
</div>
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<div class="titlepage"><div><div>
<h3 class="title"><a id="_threat_mapping_26"></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/interactive-terminal-spawned-via-perl.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: Execution
</li>
<li class="listitem">
ID: TA0002
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/tactics/TA0002/" class="ulink" target="_top">https://attack.mitre.org/tactics/TA0002/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Command-Line Interface
</li>
<li class="listitem">
ID: T1059
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1059/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1059/</a>
</li>
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