Куда я попал?
SECURITM это SGRC система, ? автоматизирующая процессы в службах информационной безопасности. SECURITM помогает построить и управлять ИСПДн, КИИ, ГИС, СМИБ/СУИБ, банковскими системами защиты.
А еще SECURITM это место для обмена опытом и наработками для служб безопасности.

Boot or Logon Autostart Execution:  Поставщики времени

Adversaries may abuse time providers to execute DLLs when the system boots. The Windows Time service (W32Time) enables time synchronization across and within domains.(Citation: Microsoft W32Time Feb 2018) W32Time time providers are responsible for retrieving time stamps from hardware/network resources and outputting these values to other network clients.(Citation: Microsoft TimeProvider) Time providers are implemented as dynamic-link libraries (DLLs) that are registered in the subkeys of HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\W32Time\TimeProviders\.(Citation: Microsoft TimeProvider) The time provider manager, directed by the service control manager, loads and starts time providers listed and enabled under this key at system startup and/or whenever parameters are changed.(Citation: Microsoft TimeProvider) Adversaries may abuse this architecture to establish persistence, specifically by registering and enabling a malicious DLL as a time provider. Administrator privileges are required for time provider registration, though execution will run in context of the Local Service account.(Citation: Github W32Time Oct 2017)

ID: T1547.003
Относится к технике:  T1547
Тактика(-и): Persistence, Privilege Escalation
Платформы: Windows
Требуемые разрешения: Administrator, SYSTEM
Источники данных: Command: Command Execution, Module: Module Load, Process: Process Creation, Windows Registry: Windows Registry Key Modification
Версия: 1.0
Дата создания: 24 Jan 2020
Последнее изменение: 20 Apr 2022

Контрмеры

Контрмера Описание
Restrict Registry Permissions

Restrict the ability to modify certain hives or keys in the Windows Registry.

Restrict File and Directory Permissions

Restrict access by setting directory and file permissions that are not specific to users or privileged accounts.

Обнаружение

Baseline values and monitor/analyze activity related to modifying W32Time information in the Registry, including application programming interface (API) calls such as RegCreateKeyEx and RegSetValueEx as well as execution of the W32tm.exe utility.(Citation: Microsoft W32Time May 2017) There is no restriction on the number of custom time providers registrations, though each may require a DLL payload written to disk.(Citation: Github W32Time Oct 2017) The Sysinternals Autoruns tool may also be used to analyze auto-starting locations, including DLLs listed as time providers.(Citation: TechNet Autoruns)

Каталоги