Detectionhightest
Potential Persistence Via DLLPathOverride
Detects when an attacker adds a new "DLLPathOverride" value to the "Natural Language" key in order to achieve persistence which will get invoked by "SearchIndexer.exe" process
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Nasreddine Bencherchali (Nextron Systems)Created Thu Jul 21Updated Thu Aug 17a1b1fd53-9c4a-444c-bae0-34a330fc7aa8windows
Log Source
WindowsRegistry Set
ProductWindows← raw: windows
CategoryRegistry Set← raw: registry_set
Detection Logic
Detection Logic2 selectors
detection:
selection_root:
# The path can be for multiple languages
# Example: HKLM\System\CurrentControlSet\Control\ContentIndex\Language\English_UK
# HKLM\System\CurrentControlSet\Control\ContentIndex\Language\English_US
# HKLM\System\CurrentControlSet\Control\ContentIndex\Language\Neutral
TargetObject|contains: '\SYSTEM\CurrentControlSet\Control\ContentIndex\Language\'
selection_values:
TargetObject|contains:
- '\StemmerDLLPathOverride'
- '\WBDLLPathOverride'
- '\StemmerClass'
- '\WBreakerClass'
condition: all of selection_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Tactics
Rule Metadata
Rule ID
a1b1fd53-9c4a-444c-bae0-34a330fc7aa8
Status
test
Level
high
Type
Detection
Created
Thu Jul 21
Modified
Thu Aug 17
Path
rules/windows/registry/registry_set/registry_set_persistence_natural_language.yml
Raw Tags
attack.persistence