Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
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Indexed Rules
3,707
Ready to search
Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Modify Group Policy Settings
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Modify Group Policy Settings
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: Modify Group Policy Settings
id: ada4b0c4-758b-46ac-9033-9004613a150d
related:
- id: b7216a7d-687e-4c8d-82b1-3080b2ad961f
type: similar
status: test
description: Detect malicious GPO modifications can be used to implement many other malicious behaviors.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1484.001/T1484.001.md
author: frack113
date: 2022-08-19
tags:
- attack.defense-evasion
- attack.privilege-escalation
- attack.t1484.001
logsource:
category: process_creation
product: windows
detection:
selection_reg:
- Image|endswith: '\reg.exe'
- OriginalFileName: 'reg.exe'
selection_path:
CommandLine|contains: '\SOFTWARE\Policies\Microsoft\Windows\System'
selection_key:
CommandLine|contains:
- GroupPolicyRefreshTimeDC
- GroupPolicyRefreshTimeOffsetDC
- GroupPolicyRefreshTime
- GroupPolicyRefreshTimeOffset
- EnableSmartScreen
- ShellSmartScreenLevel
condition: all of selection_*
falsepositives:
- Legitimate use
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/process_creation/proc_creation_win_reg_modify_group_policy_settings.yml