Detectionmediumtest
Modify Group Policy Settings
Detect malicious GPO modifications can be used to implement many other malicious behaviors.
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Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic3 selectors
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_*False Positives
Legitimate use
References
MITRE ATT&CK
Rule Metadata
Rule ID
ada4b0c4-758b-46ac-9033-9004613a150d
Status
test
Level
medium
Type
Detection
Created
Fri Aug 19
Author
Path
rules/windows/process_creation/proc_creation_win_reg_modify_group_policy_settings.yml
Raw Tags
attack.defense-evasionattack.privilege-escalationattack.t1484.001