Detects a suspicious copy command from a remote C$ or ADMIN$ share

Rule Content

- title: Copy from Admin Share
  id: 855bc8b5-2ae8-402e-a9ed-b889e6df1900
  status: experimental
  description: Detects a suspicious copy command from a remote C$ or ADMIN$ share
  references:
  - https://twitter.com/SBousseaden/status/1211636381086339073
  author: Florian Roth
  date: 2019/12/30
  tags:
  - attack.lateral_movement
  - attack.t1077
  - attack.t1105
  logsource:
    category: process_creation
    product: windows
    service: null
  detection:
    selection:
      CommandLine|contains:
      - copy *\c$
      - copy *\ADMIN$
    condition: selection
  fields:
  - CommandLine
  - ParentCommandLine
  falsepositives:
  - Administrative scripts
  level: high

Querying Elasticsearch

Import Libraries



In [ ]:

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

Initialize Elasticsearch client



In [ ]:

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

Run Elasticsearch Query



In [ ]:

    
s = searchContext.query('query_string', query='process_command_line.keyword:(*copy\ *\\c$* OR *copy\ *\\ADMIN$*)')
response = s.execute()
if response.success():
    df = pd.DataFrame((d.to_dict() for d in s.scan()))

Show Results



In [ ]:

    
df.head()