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<div><h1 class="title"><a id="id-1"></a>AdFind Command Activity</h1><a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/security-docs/edit/8.18/docs/detections/prebuilt-rules/rule-details/adfind-command-activity.asciidoc">edit</a></div>
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A newer version is available. Check out the <a href="https://www.elastic.co/docs/reference/security/prebuilt-rules/rules/windows/discovery_adfind_command_activity">latest documentation</a>.
</div>
<div class="section">
<div class="titlepage"><div><div>
<div class="position-relative"><h2 class="title"><a id="adfind-command-activity"></a>AdFind Command Activity</h2><a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/security-docs/edit/8.18/docs/detections/prebuilt-rules/rule-details/adfind-command-activity.asciidoc">edit</a></div>
</div></div></div>
<p>This rule detects the Active Directory query tool, AdFind.exe. AdFind has legitimate purposes, but it is frequently leveraged by threat actors to perform post-exploitation Active Directory reconnaissance. The AdFind tool has been observed in Trickbot, Ryuk, Maze, and FIN6 campaigns. For Winlogbeat, this rule requires Sysmon.</p>
<p><span class="strong strong"><strong>Rule type</strong></span>: eql</p>
<p><span class="strong strong"><strong>Rule indices</strong></span>:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
endgame-*
</li>
<li class="listitem">
logs-crowdstrike.fdr*
</li>
<li class="listitem">
logs-endpoint.events.process-*
</li>
<li class="listitem">
logs-m365_defender.event-*
</li>
<li class="listitem">
logs-sentinel_one_cloud_funnel.*
</li>
<li class="listitem">
logs-system.security*
</li>
<li class="listitem">
logs-windows.forwarded*
</li>
<li class="listitem">
logs-windows.sysmon_operational-*
</li>
<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>: 5m</p>
<p><span class="strong strong"><strong>Searches indices from</strong></span>: now-9m (<a href="/guide/en/elasticsearch/reference/8.18/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" title="Set the rule’s schedule"><code class="literal">Additional look-back time</code></a>)</p>
<p><span class="strong strong"><strong>Maximum alerts per execution</strong></span>: 100</p>
<p><span class="strong strong"><strong>References</strong></span>:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
<a href="http://www.joeware.net/freetools/tools/adfind/" class="ulink" target="_top">http://www.joeware.net/freetools/tools/adfind/</a>
</li>
<li class="listitem">
<a href="https://thedfirreport.com/2020/05/08/adfind-recon/" class="ulink" target="_top">https://thedfirreport.com/2020/05/08/adfind-recon/</a>
</li>
<li class="listitem">
<a href="https://www.fireeye.com/blog/threat-research/2020/05/tactics-techniques-procedures-associated-with-maze-ransomware-incidents.html" class="ulink" target="_top">https://www.fireeye.com/blog/threat-research/2020/05/tactics-techniques-procedures-associated-with-maze-ransomware-incidents.html</a>
</li>
<li class="listitem">
<a href="https://www.cybereason.com/blog/dropping-anchor-from-a-trickbot-infection-to-the-discovery-of-the-anchor-malware" class="ulink" target="_top">https://www.cybereason.com/blog/dropping-anchor-from-a-trickbot-infection-to-the-discovery-of-the-anchor-malware</a>
</li>
<li class="listitem">
<a href="https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html" class="ulink" target="_top">https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html</a>
</li>
<li class="listitem">
<a href="https://usa.visa.com/dam/VCOM/global/support-legal/documents/fin6-cybercrime-group-expands-threat-To-ecommerce-merchants.pdf" class="ulink" target="_top">https://usa.visa.com/dam/VCOM/global/support-legal/documents/fin6-cybercrime-group-expands-threat-To-ecommerce-merchants.pdf</a>
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Tags</strong></span>:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Domain: Endpoint
</li>
<li class="listitem">
OS: Windows
</li>
<li class="listitem">
Use Case: Threat Detection
</li>
<li class="listitem">
Tactic: Discovery
</li>
<li class="listitem">
Resources: Investigation Guide
</li>
<li class="listitem">
Data Source: Elastic Endgame
</li>
<li class="listitem">
Data Source: Elastic Defend
</li>
<li class="listitem">
Data Source: Windows Security Event Logs
</li>
<li class="listitem">
Data Source: Microsoft Defender for Endpoint
</li>
<li class="listitem">
Data Source: Sysmon
</li>
<li class="listitem">
Data Source: SentinelOne
</li>
<li class="listitem">
Data Source: Crowdstrike
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Version</strong></span>: 317</p>
<p><span class="strong strong"><strong>Rule authors</strong></span>:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Elastic
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Rule license</strong></span>: Elastic License v2</p>
<div class="section">
<div class="titlepage"><div><div>
<div class="position-relative"><h3 class="title"><a id="_investigation_guide_127"></a>Investigation guide</h3><a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/security-docs/edit/8.18/docs/detections/prebuilt-rules/rule-details/adfind-command-activity.asciidoc">edit</a></div>
</div></div></div>
<p><span class="strong strong"><strong>Triage and analysis</strong></span></p>
<p><span class="strong strong"><strong>Investigating AdFind Command Activity</strong></span></p>
<p><a href="http://www.joeware.net/freetools/tools/adfind/" class="ulink" target="_top">AdFind</a> is a freely available command-line tool used to retrieve information from Active Directory (AD). Network discovery and enumeration tools like <code class="literal">AdFind</code> are useful to adversaries in the same ways they are effective for network administrators. This tool provides quick ability to scope AD person/computer objects and understand subnets and domain information. There are many <a href="https://thedfirreport.com/category/adfind/" class="ulink" target="_top">examples</a> of this tool being adopted by ransomware and criminal groups and used in compromises.</p>
<p><span class="strong strong"><strong>Possible investigation steps</strong></span></p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Investigate the process execution chain (parent process tree) for unknown processes. Examine their executable files for prevalence, whether they are located in expected locations, and if they are signed with valid digital signatures.
</li>
<li class="listitem">
Identify the user account that performed the action and whether it should perform this kind of action.
</li>
<li class="listitem">
Examine the command line to determine what information was retrieved by the tool.
</li>
<li class="listitem">
Contact the account owner and confirm whether they are aware of this activity.
</li>
<li class="listitem">
Investigate other alerts associated with the user/host during the past 48 hours.
</li>
</ul>
</div>
<p><span class="strong strong"><strong>False positive analysis</strong></span></p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
This rule has a high chance to produce false positives as it is a legitimate tool used by network administrators.
</li>
<li class="listitem">
If this rule is noisy in your environment due to expected activity, consider adding exceptions — preferably with a combination of user and command line conditions.
</li>
<li class="listitem">
Malicious behavior with <code class="literal">AdFind</code> should be investigated as part of a step within an attack chain. It doesn’t happen in isolation, so reviewing previous logs/activity from impacted machines can be very telling.
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Related rules</strong></span></p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Windows Network Enumeration - 7b8bfc26-81d2-435e-965c-d722ee397ef1
</li>
<li class="listitem">
Enumeration of Administrator Accounts - 871ea072-1b71-4def-b016-6278b505138d
</li>
<li class="listitem">
Enumeration Command Spawned via WMIPrvSE - 770e0c4d-b998-41e5-a62e-c7901fd7f470
</li>
</ul>
</div>
<p><span class="strong strong"><strong>Response and remediation</strong></span></p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Initiate the incident response process based on the outcome of the triage.
</li>
<li class="listitem">
Isolate the involved host to prevent further post-compromise behavior.
</li>
<li class="listitem">
Investigate credential exposure on systems compromised or used by the attacker to ensure all compromised accounts are identified. Reset passwords for these accounts and other potentially compromised credentials, such as email, business systems, and web services.
</li>
<li class="listitem">
Run a full antimalware scan. This may reveal additional artifacts left in the system, persistence mechanisms, and malware components.
</li>
<li class="listitem">
Determine the initial vector abused by the attacker and take action to prevent reinfection through the same vector.
</li>
<li class="listitem">
Using the incident response data, update logging and audit policies to improve the mean time to detect (MTTD) and the mean time to respond (MTTR).
</li>
</ul>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div>
<div class="position-relative"><h3 class="title"><a id="_rule_query_133"></a>Rule query</h3><a class="edit_me" rel="nofollow" title="Edit this page on GitHub" href="https://github.com/elastic/security-docs/edit/8.18/docs/detections/prebuilt-rules/rule-details/adfind-command-activity.asciidoc">edit</a></div>
</div></div></div>
<div class="pre_wrapper lang-js">
<div class="console_code_copy" title="Copy to clipboard"></div>
<pre class="programlisting prettyprint lang-js">process where host.os.type == "windows" and event.type == "start" and
(process.name : "AdFind*.exe" or ?process.pe.original_file_name == "AdFind.exe") and
process.args : ("objectcategory=computer", "(objectcategory=computer)",
"objectcategory=person", "(objectcategory=person)",
"objectcategory=subnet", "(objectcategory=subnet)",
"objectcategory=group", "(objectcategory=group)",
"objectcategory=organizationalunit", "(objectcategory=organizationalunit)",
"objectcategory=attributeschema", "(objectcategory=attributeschema)",
"domainlist", "dcmodes", "adinfo", "dclist", "computers_pwnotreqd", "trustdmp")</pre>
</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: Discovery
</li>
<li class="listitem">
ID: TA0007
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/tactics/TA0007/" class="ulink" target="_top">https://attack.mitre.org/tactics/TA0007/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: System Network Configuration Discovery
</li>
<li class="listitem">
ID: T1016
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1016/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1016/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Remote System Discovery
</li>
<li class="listitem">
ID: T1018
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1018/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1018/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Permission Groups Discovery
</li>
<li class="listitem">
ID: T1069
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1069/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1069/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Sub-technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Domain Groups
</li>
<li class="listitem">
ID: T1069.002
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1069/002/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1069/002/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Account Discovery
</li>
<li class="listitem">
ID: T1087
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1087/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1087/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Sub-technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Domain Account
</li>
<li class="listitem">
ID: T1087.002
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1087/002/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1087/002/</a>
</li>
</ul>
</div>
</li>
<li class="listitem">
<p>Technique:</p>
<div class="ulist itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
Name: Domain Trust Discovery
</li>
<li class="listitem">
ID: T1482
</li>
<li class="listitem">
Reference URL: <a href="https://attack.mitre.org/techniques/T1482/" class="ulink" target="_top">https://attack.mitre.org/techniques/T1482/</a>
</li>
</ul>
</div>
</li>
</ul>
</div>
</div>
</div>
</div>
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