- title: AD Privileged Users or Groups Reconnaissance
id: 35ba1d85-724d-42a3-889f-2e2362bcaf23
description: Detect priv users or groups recon based on 4661 eventid and known privileged
users or groups SIDs
references:
- https://blog.menasec.net/2019/02/threat-hunting-5-detecting-enumeration.html
tags:
- attack.discovery
- attack.t1087
status: experimental
author: Samir Bousseaden
logsource:
product: windows
service: security
definition: 'Requirements: enable Object Access SAM on your Domain Controllers'
category: null
detection:
selection:
EventID: 4661
ObjectType:
- SAM_USER
- SAM_GROUP
ObjectName:
- '*-512'
- '*-502'
- '*-500'
- '*-505'
- '*-519'
- '*-520'
- '*-544'
- '*-551'
- '*-555'
- '*admin*'
condition: selection
falsepositives:
- if source account name is not an admin then its super suspicious
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-security-*', doc_type='doc')
In [ ]:
s = searchContext.query('query_string', query='(event_id:"4661" AND object_type:("SAM_USER" OR "SAM_GROUP") AND object_name.keyword:(*\-512 OR *\-502 OR *\-500 OR *\-505 OR *\-519 OR *\-520 OR *\-544 OR *\-551 OR *\-555 OR *admin*))')
response = s.execute()
if response.success():
df = pd.DataFrame((d.to_dict() for d in s.scan()))
In [ ]:
df.head()