SV-213427r961197: Microsoft Defender AV must be configured to automatically take action on all detected tasks. | Microsoft Defender Antivirus STIG SCAP Benchmark

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Assessment Title

Rule Text

Microsoft Defender AV must be configured to automatically take action on all detected tasks.

Description

Discussion Text

This policy setting allows Microsoft Defender configuration to automatically take action on all detected threats. The action to be taken on a particular threat is determined by the combination of the policy-defined action user-defined action and the signature-defined action. If this policy setting is enabled, Microsoft Defender does not automatically take action on the detected threats but prompts users to choose from the actions available for each threat. If this policy setting is disabled or not configured, Microsoft Defender automatically takes action on all detected threats after a nonconfigurable delay of approximately five seconds.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-001243SV-89831V-75151

References

DPMS Target Microsoft Defender Antivirus DISA DPMS Target Microsoft Defender Antivirus 3985

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

# Windows PowerShell
# Reconstructed from oval:mil.disa.stig.defenderantivirus:def:2
# Microsoft Defender AV must be configured to automatically take action on all detected tasks.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# registry_object (registry_test)
function test_1 {
  return (((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows Defender').GetValueKind('DisableRoutinelyTakingAction').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows Defender' -Name 'DisableRoutinelyTakingAction' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'DisableRoutinelyTakingAction') -eq 0))
}

if (test_1) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual ms_defender_antivirus target this check assesses.

# OVAL Definition: oval:mil.disa.stig.defenderantivirus:def:2
$compliant = Test-Path -Path "HKLM:\Software\Policies\Microsoft\Windows Defender" -ErrorAction SilentlyContinue
if ($compliant) { $value = Get-ItemProperty -Path "HKLM:\Software\Policies\Microsoft\Windows Defender" -Name "DisableRoutinelyTakingAction" }.NullIf(!$compliant)
if ($value -and $value.DisableRoutinelyTakingAction -eq 0) { Write-Output "PASS"; Exit 0 }
Write-Output "FAIL"; Exit 1

Remediation

Set the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Defender Antivirus >> "Turn off routine remediation" to "Disabled" or "Not Configured".