Taskmgr as LOCAL_SYSTEM

Detects the creation of taskmgr.exe process in context of LOCAL_SYSTEM

Rule Content

- title: Taskmgr as LOCAL_SYSTEM
  id: 9fff585c-c33e-4a86-b3cd-39312079a65f
  status: experimental
  description: Detects the creation of taskmgr.exe process in context of LOCAL_SYSTEM
  tags:
  - attack.defense_evasion
  - attack.t1036
  author: Florian Roth
  date: 2018/03/18
  logsource:
    category: process_creation
    product: windows
    service: null
  detection:
    selection:
      User: NT AUTHORITY\SYSTEM
      Image: '*\taskmgr.exe'
    condition: selection
  falsepositives:
  - Unkown
  level: high

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='(user_account:"NT\ AUTHORITY\\SYSTEM" AND process_path.keyword:*\\taskmgr.exe)')
response = s.execute()
if response.success():
    df = pd.DataFrame((d.to_dict() for d in s.scan()))

Show Results



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df.head()