NTLM Logon

Detects logons using NTLM, which could be caused by a legacy source or attackers

Rule Content

- title: NTLM Logon
  id: 98c3bcf1-56f2-49dc-9d8d-c66cf190238b
  status: experimental
  description: Detects logons using NTLM, which could be caused by a legacy source
    or attackers
  references:
  - https://twitter.com/JohnLaTwC/status/1004895028995477505
  - https://goo.gl/PsqrhT
  author: Florian Roth
  date: 2018/06/08
  tags:
  - attack.lateral_movement
  - attack.t1075
  logsource:
    product: windows
    service: ntlm
    definition: Reqiures events from Microsoft-Windows-NTLM/Operational
    category: null
  detection:
    selection:
      EventID: 8002
      CallingProcessName: '*'
    condition: selection
  falsepositives:
  - Legacy hosts
  level: low

Querying Elasticsearch

Import Libraries



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from elasticsearch import Elasticsearch
from elasticsearch_dsl import Search
import pandas as pd

Initialize Elasticsearch client



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es = Elasticsearch(['http://helk-elasticsearch:9200'])
searchContext = Search(using=es, index='logs-*', doc_type='doc')

Run Elasticsearch Query



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s = searchContext.query('query_string', query='(event_id:"8002" AND process_path.keyword:*)')
response = s.execute()
if response.success():
    df = pd.DataFrame((d.to_dict() for d in s.scan()))

Show Results



In [ ]:

    
df.head()