1200KM / detection
T1484.001 Group Policy Modification — Detection Rules
Detection workspace for T1484.001 Group Policy Modification: 6 Sigma sources, 0 Atlas concepts and 0 anomaly models. No live detection validation.
Source-backed rule directory
- Windows Default Domain GPO Modification · experimental · medium · {"product":"windows","service":"security","definition":"Enable 'Audit Directory Service Changes' in the Default Domain Controllers Policy under:\nComputer Configuration -> Policies -> Windows Settings -> Security Settings -> Advanced Audit Policy Configuration -> Audit Policies -> DS Access -> Audit Directory Service Changes (Success).\nAdditionally, 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.\n"}
- Group Policy Abuse for Privilege Addition · test · medium · {"product":"windows","service":"security","definition":"Requirements: The \"Audit Directory Service Changes\" logging policy must be configured in order to receive events."}
- Startup/Logon Script Added to Group Policy Object · test · medium · {"product":"windows","service":"security","definition":"The advanced audit policy setting \"Object Access > Audit Detailed File Share\" must be configured for Success/Failure"}
- Modify Group Policy Settings - ScriptBlockLogging · test · medium · {"product":"windows","category":"ps_script","definition":"Requirements: Script Block Logging must be enabled"}
- Windows Default Domain GPO Modification via GPME · experimental · medium · {"product":"windows","category":"process_creation"}
- Modify Group Policy Settings · test · medium · {"category":"process_creation","product":"windows"}
Atlas deterministic concepts
No exact concept selected.
Anomaly models
No exact Atlas model in this snapshot.
ATT&CK analytic guidance
DET0305 Detection of Group Policy Modifications via AD Object Changes and File Activity
AN0854 Analytic 0854
Adversary modifies GPO containers or files under SYSVOL using LDAP, ADSI, PowerShell (e.g., New-GPOImmediateTask) or GUI tools. This includes directory object changes (e.g., gPCFileSysPath), delegation assignments (SeEnableDelegationPrivilege), and SYSVOL file writes (ScheduledTasks.xml, GptTmpl.inf).
Connected ecosystem references
Linked tags
Simulation, tools and telemetry
Threat actor context
These are explicit actor-to-technique associations in the existing Threat Matrix snapshot, not attribution of an event or proof that a detector identifies the actor. No tool-to-actor relationship is inferred.
Existing anomaly research
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.