registry_set_asep_reg_keys_modification_session_manager.yml

title: Session Manager Autorun Keys Modification
id: 046218bd-e0d8-4113-a3c3-895a12b2b298
related:
    - id: 17f878b8-9968-4578-b814-c4217fc5768c
      type: obsoletes
status: test
description: Detects modification of autostart extensibility point (ASEP) in registry.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md
    - https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns
    - https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d # a list with registry keys
author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)
date: 2019/10/25
modified: 2023/08/17
tags:
    - attack.persistence
    - attack.t1547.001
    - attack.t1546.009
logsource:
    category: registry_set
    product: windows
detection:
    session_manager_base:
        TargetObject|contains: '\System\CurrentControlSet\Control\Session Manager'
    session_manager:
        TargetObject|contains:
            - '\SetupExecute'
            - '\S0InitialCommand'
            - '\KnownDlls'
            - '\Execute'
            - '\BootExecute'
            - '\AppCertDlls'
    filter:
        Details: '(Empty)'
    condition: session_manager_base and session_manager and not filter
fields:
    - SecurityID
    - ObjectName
    - OldValueType
    - NewValueType
falsepositives:
    - Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason
    - Legitimate administrator sets up autorun keys for legitimate reason
level: medium