Potential Remote Desktop Connection to Non-Domain Host

testmedium
log source: windows · ntlmauthor James Pembertondate 2020-05-22
01

description

What this is, in brief.

Detects logons using NTLM to hosts that are potentially not part of the domain.

02

tags

attack.command-and-controlattack.t1219.002
03

rule source (YAML)

title: Potential Remote Desktop Connection to Non-Domain Host
id: ce5678bb-b9aa-4fb5-be4b-e57f686256ad
status: test
description: Detects logons using NTLM to hosts that are potentially not part of the domain.
references:
    - n/a
author: James Pemberton
date: 2020-05-22
modified: 2021-11-27
tags:
    - attack.command-and-control
    - attack.t1219.002
logsource:
    product: windows
    service: ntlm
    definition: Requires events from Microsoft-Windows-NTLM/Operational
detection:
    selection:
        EventID: 8001
        TargetName|startswith: 'TERMSRV'
    condition: selection
falsepositives:
    - Host connections to valid domains, exclude these.
    - Host connections not using host FQDN.
    - Host connections to external legitimate domains.
level: medium
04

detects techniques (1)

ATT&CK techniques this enables or maps to.

05

references

External citations — patches, advisories, analysis.

  • n/a