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
Suspicious Service DACL Modification Via Set-Service Cmdlet - PS
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Service DACL Modification Via Set-Service Cmdlet - PS
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: Suspicious Service DACL Modification Via Set-Service Cmdlet - PS
id: 22d80745-6f2c-46da-826b-77adaededd74
related:
- id: a95b9b42-1308-4735-a1af-abb1c5e6f5ac
type: similar
status: test
description: Detects usage of the "Set-Service" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as "sc.exe", "Get-Service"...etc. (Works only in powershell 7)
references:
- https://twitter.com/Alh4zr3d/status/1580925761996828672
- https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/set-service?view=powershell-7.2
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-10-24
tags:
- attack.persistence
- attack.defense-evasion
- attack.privilege-escalation
- attack.t1574.011
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection_sddl_flag:
ScriptBlockText|contains:
- '-SecurityDescriptorSddl '
- '-sd '
selection_set_service:
ScriptBlockText|contains|all:
- 'Set-Service '
- 'D;;'
ScriptBlockText|contains:
- ';;;IU'
- ';;;SU'
- ';;;BA'
- ';;;SY'
- ';;;WD'
condition: all of selection_*
falsepositives:
- Rare intended use of hidden services
- Rare FP could occur due to the non linearity of the ScriptBlockText log
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/powershell/powershell_script/posh_ps_susp_service_dacl_modification_set_service.yml