Gpresult - CraftedSignal Threat Feedhttps://feed.craftedsignal.io/tags/gpresult/Trending threats, MITRE ATT&CK coverage, and detection metadata. Fed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioWed, 03 Jan 2024 12:00:00 +0000Group Policy Discovery via GPResult Utilityhttps://feed.craftedsignal.io/briefs/2024-01-gpresult-discovery/Wed, 03 Jan 2024 12:00:00 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2024-01-gpresult-discovery/This rule detects the execution of gpresult.exe with specific arguments to query group policy objects, potentially indicating reconnaissance activity by attackers aiming to understand the Active Directory environment for privilege escalation or lateral movement.The detection rule "Group Policy Discovery via Microsoft GPResult Utility" identifies the use of gpresult.exe with specific arguments (/z, /v, /r, /x) on Windows systems. This activity is often associated with attackers performing reconnaissance after gaining initial access to a compromised system. By querying Group Policy Objects (GPOs), adversaries can map out the Active Directory environment, discover potential attack paths, and identify opportunities for privilege escalation or lateral movement. The rule is designed to detect this behavior across various Windows environments, using data from Elastic Endgame, Elastic Defend, Windows Security Event Logs, Microsoft Defender XDR, Sysmon, SentinelOne, and Crowdstrike. The original rule was created on 2023/01/18 and last updated on 2026/04/07.

Attack Chain

  1. An attacker compromises a Windows endpoint through an initial access vector.
  2. The attacker executes gpresult.exe from the command line.
  3. Specific arguments such as /z, /v, /r, or /x are used with gpresult.exe to query GPO information.
  4. The utility retrieves and displays the applied GPOs for the user or computer.
  5. The attacker parses the output of gpresult.exe to identify security policies and settings.
  6. The attacker analyzes the GPO data to discover potential misconfigurations or vulnerabilities.
  7. Based on the findings, the attacker attempts to exploit identified weaknesses for privilege escalation or lateral movement.
  8. The attacker moves laterally to other systems within the Active Directory environment.

Impact

Successful execution of this attack chain can lead to privilege escalation within the network, enabling attackers to gain control over critical systems and data. While discovery is not inherently malicious, it often precedes more damaging actions. Detecting this activity early can prevent attackers from successfully mapping the environment and exploiting vulnerabilities. The impact can range from data theft to complete system compromise, depending on the attacker's objectives and the vulnerabilities present in the environment.

Recommendation

  • Deploy the Sigma rule below to your SIEM to detect the execution of gpresult.exe with suspicious arguments ( /z, /v, /r, /x).
  • Investigate any alerts generated by the Sigma rule to determine the context and intent of the gpresult.exe execution.
  • Enable Sysmon process creation logging to provide detailed process execution data for accurate detection.
  • Review and harden Group Policy settings to minimize potential vulnerabilities that attackers can exploit.
  • Monitor for unusual network connections or account activity following the detection of gpresult.exe execution.
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