Convert indexed Sigma rules into analyst-ready detections.

title: Usage of Renamed Sysinternals Tools - RegistrySet
id: 8023f872-3f1d-4301-a384-801889917ab4
related:
    - id: 25ffa65d-76d8-4da5-a832-3f2b0136e133
      type: derived
    - id: f50f3c09-557d-492d-81db-9064a8d4e211
      type: similar
status: test
description: Detects non-sysinternals tools setting the "accepteula" key which normally is set on sysinternals tool execution
references:
    - Internal Research
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-24
modified: 2023-08-17
tags:
    - attack.resource-development
    - attack.t1588.002
logsource:
    product: windows
    category: registry_set
detection:
    selection:
        TargetObject|contains:
            - '\PsExec'
            - '\ProcDump'
            - '\Handle'
            - '\LiveKd'
            - '\Process Explorer'
            - '\PsLoglist'
            - '\PsPasswd'
            - '\Active Directory Explorer'
        TargetObject|endswith: '\EulaAccepted'
    filter_main_image_names:
        Image|endswith:
            - '\PsExec.exe'
            - '\PsExec64.exe'
            - '\procdump.exe'
            - '\procdump64.exe'
            - '\handle.exe'
            - '\handle64.exe'
            - '\livekd.exe'
            - '\livekd64.exe'
            - '\procexp.exe'
            - '\procexp64.exe'
            - '\psloglist.exe'
            - '\psloglist64.exe'
            - '\pspasswd.exe'
            - '\pspasswd64.exe'
            - '\ADExplorer.exe'
            - '\ADExplorer64.exe'
    filter_optional_null:
        Image: null # Race condition with some logging tools
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Unlikely
level: high