Query: alert when Detects modifications to Default Domain or Default Domain Controllers Group Policy Objects (GPOs). Adversaries may modif
Matching passage: Sigma rule: Detects modifications to Default Domain or Default Domain Controllers Group Policy Objects (GPOs). Adversaries may modif. Logsource: windows / security. Rule: title: Windows Default Domain GPO Modification id: e5ac86dd-2da1-454b-be74-05d26c769d7d related: - id: dcff7e85-d01f-4eb5-badd-84e2e6be8294 type: similar status: experimental description: 'Detects modifications to Default Domain or Default Domain Controllers Group Policy Objects (GPOs). Adversaries may modify these default GPOs to deploy malicious configurations across the domain. ' references: - https://www.trendmicro.com/en_us/research/25/i/unmasking-the-gentlemen-ransomware.html - https://adsecurity.org/?p=3377 - https://www.pentestpartners.com/security-blog/living-off-the-land-gpo-style/ - https://jgspiers.com/audit-group-policy-changes/ author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-11-22 tags: - attack.privilege-escalation - attack.defense-impairment - attack.t1484.001 logsource: product: windows service: security definition: 'Enable ''Audit Directory Service Changes'' in the Default Domain Controllers Policy under: Computer Configuration -> Policies -> Windows Settings -> Security Settings -> Advanced Audit Policy Configuration -> Audit Policies -> DS Access -> Audit Directory Service Changes (Success). Additionally, proper SACL needs to be configured on the ''CN=Policies,CN=System,DC=<domain>,DC=<tld>'' container in Active Directory to capture changes to Group Policy Objects. ' detection: selection: EventID: 5136 ObjectClass: groupPolicyContainer ObjectDN|startswith: - CN={31B2F340-016D-11D2-945F-00C04FB984F9},CN=POLICIES,CN=SYSTEM - CN={6AC1786C-016F-11D2-945F-00C04FB984F9},CN=POLICIES,CN=SYSTEM condition: selection falsepositives: - Legitimate modifications to Default Domain or Default Domain Controllers GPOs level: medium
Near-miss passage: Sigma rule: Detects the execution of a Windows system binary that is usually located in the system folder from an uncommon location.. Logsource: windows / process_creation. Rule: title: System File Execution Location Anomaly id: e4a6b256-3e47-40fc-89d2-7a477edd6915 related: - id: be58d2e2-06c8-4f58-b666-b99f6dc3b6cd type: derived status: test description: 'Detects the execution of a Windows system binary that is usually located in the system folder from an uncommon location. ' references: - https://twitter.com/GelosSnake/status/934900723426439170 - https://asec.ahnlab.com/en/39828/ - https://www.splunk.com/en_us/blog/security/inno-setup-malware-redline-stealer-campaign.html author: Florian Roth (Nextron Systems), Patrick Bareiss, Anton Kutepov, oscd.community, Nasreddine Bencherchali (Nextron Systems) date: 2017-11-27 modified: 2026-07-28 tags: - attack.stealth - attack.t1036 logsource: category: process_creation product: windows detection: selection: Image|endswith: - \atbroker.exe - \audiodg.exe - \bcdedit.exe - \bitsadmin.exe - \certreq.exe - \certutil.exe - \cmstp.exe - \conhost.exe - \consent.exe - \cscript.exe - \csrss.exe - \dashost.exe - \defrag.exe - \dfrgui.exe - \dism.exe - \dllhost.exe - \dllhst3g.exe - \dwm.exe - \eventvwr.exe - \fsquirt.exe - \finger.exe - \logonui.exe - \LsaIso.exe - \lsass.exe - \lsm.exe - \msiexec.exe - \ntoskrnl.exe - \powershell_ise.exe - \powershell.exe - \pwsh.exe - \regsvr32.exe - \rundll32.exe - \runonce.exe - \RuntimeBroker.exe - \schtasks.exe - \services.exe - \sihost.exe - \smartscreen.exe - \smss.exe - \spoolsv.exe - \svchost.exe - \taskhost.exe - \taskhostw.exe - \Taskmgr.exe - \userinit.exe - \werfault.exe - \werfaultsecure.exe - \wininit.exe - \winlogon.exe - \winver.exe - \wlanext.exe - \wmic.exe - \wscript.exe - \wsl.exe - \wsmprovhost.exe filter_main_generic: Image|startswith: - C:\$WINDOWS.~BT\ - C:\$WinREAgent\ - C:\Windows\SoftwareDistribution\ - C:\Windows\System32\ - C:\Windows\SystemTemp\ - C:\Windows\SysWOW64\ - C:\Windows\uus\ - C:\Windows\WinSxS\ filter_optional_system32: Image|contains: \SystemRoot\System32\ filter_main_powershell: Image|contains: - C:\Program Files\PowerShell\7\ - C:\Program Files\PowerShell\7-preview\ - C:\Program Files\WindowsApps\Microsoft.PowerShellPreview - \AppData\Local\Microsoft\WindowsApps\Microsoft.PowerShellPreview Image|endswith: \pwsh.exe filter_main_wsl_programfiles: Image|startswith: - C:\Program Files\WindowsApps\MicrosoftCorporationII.WindowsSubsystemForLinux - C:\Program Files\WSL\ Image|endswith: \wsl.exe filter_main_wsl_appdata: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\WindowsApps\ Image|endswith: \wsl.exe c