PowerShell Logging Disabled Via Registry Key Tampering

Severity: high
Author: frack113
Source: upstream

Detects changes to the registry for the currently logged-in user. In order to disable PowerShell module logging, script block logging or transcription and script execution logging

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	`T1112` Modify Registry
Defense Evasion	`T1112` Modify Registry, `T1564.001` Hide Artifacts: Hidden Files and Directories

Event coverage

Provider	Event ID	Title
Sysmon	13	RegistryEvent (Value Set)

Stages and Predicates

Stage 1: `selection`

or:
TargetObject|endswith: '\EnableScripts'
TargetObject|endswith: '\ModuleLogging\EnableModuleLogging'
TargetObject|endswith: '\ScriptBlockLogging\EnableScriptBlockInvocationLogging'
TargetObject|endswith: '\ScriptBlockLogging\EnableScriptBlockLogging'
TargetObject|endswith: '\Transcription\EnableInvocationHeader'
TargetObject|endswith: '\Transcription\EnableTranscripting'
or:
TargetObject|contains: '\Microsoft\PowerShellCore\'
TargetObject|contains: '\Microsoft\Windows\PowerShell\'
Details: 'DWORD (0x00000000)'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.