Denied Access To Remote Desktop

Description

This event is generated when an authenticated user who is not allowed to log on remotely attempts to connect to this computer through Remote Desktop. Often, this event can be generated by attackers when searching for available windows servers in the network.

Query · sigma

selection:
  EventID: 4825
condition: selection

Known false positives

  • Valid user was not added to RDP group
Raw source Denied Access To Remote Desktop · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Denied Access To Remote Desktop
id: 8e5c03fa-b7f0-11ea-b242-07e0576828d9
status: test
description: |
  This event is generated when an authenticated user who is not allowed to log on remotely attempts to connect to this computer through Remote Desktop.
  Often, this event can be generated by attackers when searching for available windows servers in the network.
references:
    - https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=4825
author: Pushkarev Dmitry
date: 2020-06-27
modified: 2021-11-27
tags:
    - attack.lateral-movement
    - attack.t1021.001
logsource:
    product: windows
    service: security
detection:
    selection:
        EventID: 4825
    condition: selection
falsepositives:
    - Valid user was not added to RDP group
level: medium

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