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Detectionhighexperimental

Security Event Logging Disabled via MiniNt Registry Key - Process

Detects attempts to disable security event logging by adding the `MiniNt` registry key. This key is used to disable the Windows Event Log service, which collects and stores event logs from the operating system and applications. Adversaries may want to disable this service to prevent logging of security events that could be used to detect their activities.

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Launch
Swachchhanda Shrawan Poudel (Nextron Systems)Created Wed Apr 091a4bd6af-99ac-4466-b5b2-7b72b4a05462windows
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 Logic5 selectors
detection:
    selection_reg_img:
        # Example: reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MiniNt"
        - Image|endswith: '\reg.exe'
        - OriginalFileName: 'reg.exe'
    selection_reg_cmd:
        CommandLine|contains|all:
            - ' add '
            - '\SYSTEM\CurrentControlSet\Control\MiniNt'
    selection_powershell_img:
        - Image|endswith:
              - '\powershell.exe'
              - '\pwsh.exe'
              - '\powershell_ise.exe'
        - OriginalFileName:
              - 'PowerShell.EXE'
              - 'pwsh.dll'
    selection_powershell_cmd1:
        CommandLine|contains:
            - 'New-Item '
            - 'ni '
    selection_powershell_cmd2:
        CommandLine|contains: '\SYSTEM\CurrentControlSet\Control\MiniNt'
    condition: all of selection_reg_* or all of selection_powershell_*
False Positives

Highly Unlikely

References
1
Resolving title…
hackingarticles.in
MITRE ATT&CK

CAR Analytics

2022-03-001 · CAR 2022-03-001
Related Rules
SimilarDetectionhigh

Security Event Logging Disabled via MiniNt Registry Key - Registry Set

Detects the addition of the 'MiniNt' key to the registry. Upon a reboot, Windows Event Log service will stop writing events. Windows Event Log is a service that collects and stores event logs from the operating system and applications. It is an important component of Windows security and auditing. Adversary may want to disable this service to disable logging of security events which could be used to detect their activities.

Detects similar activity. Both rules may fire on overlapping events.

Rule Metadata
Rule ID
1a4bd6af-99ac-4466-b5b2-7b72b4a05462
Status
experimental
Level
high
Type
Detection
Created
Wed Apr 09
Author
Swachchhanda Shrawan Poudel (Nextron Systems)
Path
rules/windows/process_creation/proc_creation_win_event_logging_disable_via_key_minint.yml
Raw Tags
attack.persistenceattack.defense-evasionattack.t1562.002attack.t1112car.2022-03-001
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