Detectionhightest
Powershell Add Name Resolution Policy Table Rule
Detects powershell scripts that adds a Name Resolution Policy Table (NRPT) rule for the specified namespace. This will bypass the default DNS server and uses a specified server for answering the query.
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Log Source
WindowsPowerShell Script
ProductWindows← raw: windows
CategoryPowerShell Script← raw: ps_script
Definition
Requirements: Script Block Logging must be enabled
Detection Logic
Detection Logic1 selector
detection:
selection:
ScriptBlockText|contains|all:
- 'Add-DnsClientNrptRule'
- '-Namesp'
- '-NameSe'
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Tactics
Techniques
Rule Metadata
Rule ID
4368354e-1797-463c-bc39-a309effbe8d7
Status
test
Level
high
Type
Detection
Created
Tue Sep 14
Modified
Sun Oct 09
Author
Path
rules/windows/powershell/powershell_script/posh_ps_add_dnsclient_rule.yml
Raw Tags
attack.impactattack.t1565