blue-team-tools/rules/windows/sysmon/sysmon_config_modification_error.yml

title: Sysmon Configuration Error
id: 815cd91b-7dbc-4247-841a-d7dd1392b0a8
status: test
description: Detects when an adversary is trying to hide it's action from Sysmon logging based on error messages
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md
    - https://talesfrominfosec.blogspot.com/2017/12/killing-sysmon-silently.html
author: frack113
date: 2021-06-04
modified: 2022-07-07
tags:
    - attack.defense-evasion
    - attack.t1564
logsource:
    product: windows
    category: sysmon_error
detection:
    selection_error:
        Description|contains:
            - 'Failed to open service configuration with error'
            - 'Failed to connect to the driver to update configuration'
    filter_generic_english:
        Description|contains|all:
            - 'Failed to open service configuration with error'
            - 'Last error: The media is write protected.'
    filter_by_errorcode:
        Description|contains:
            - 'Failed to open service configuration with error 19'
            - 'Failed to open service configuration with error 93'
    condition: selection_error and not 1 of filter*
falsepositives:
    - Legitimate administrative action
level: high