- title: RDP Sensitive Settings Changed
id: 171b67e1-74b4-460e-8d55-b331f3e32d67
description: Detects changes to RDP terminal service sensitive settings
references:
- https://blog.menasec.net/2019/02/threat-hunting-rdp-hijacking-via.html
date: 2019/04/03
author: Samir Bousseaden
logsource:
product: windows
service: sysmon
category: null
detection:
selection_reg:
EventID: 13
TargetObject:
- '*\services\TermService\Parameters\ServiceDll*'
- '*\Control\Terminal Server\fSingleSessionPerUser*'
- '*\Control\Terminal Server\fDenyTSConnections*'
condition: selection_reg
tags:
- attack.defense_evasion
falsepositives:
- unknown
level: high
In [ ]:
from elasticsearch import Elasticsearch
from elasticsearch_dsl import Search
import pandas as pd
In [ ]:
es = Elasticsearch(['http://helk-elasticsearch:9200'])
searchContext = Search(using=es, index='logs-endpoint-winevent-sysmon-*', doc_type='doc')
In [ ]:
s = searchContext.query('query_string', query='(event_id:"13" AND registry_key_path.keyword:(*\\services\\TermService\\Parameters\\ServiceDll* OR *\\Control\\Terminal\ Server\\fSingleSessionPerUser* OR *\\Control\\Terminal\ Server\\fDenyTSConnections*))')
response = s.execute()
if response.success():
df = pd.DataFrame((d.to_dict() for d in s.scan()))
In [ ]:
df.head()