Mimikatz Use

This method detects mimikatz keywords in different Eventlogs (some of them only appear in older Mimikatz version that are however still used by different threat groups)

Rule Content

- title: Mimikatz Use
  id: 06d71506-7beb-4f22-8888-e2e5e2ca7fd8
  description: This method detects mimikatz keywords in different Eventlogs (some
    of them only appear in older Mimikatz version that are however still used by different
    threat groups)
  author: Florian Roth
  date: 2017/01/10
  modified: 2019/10/11
  tags:
  - attack.s0002
  - attack.t1003
  - attack.lateral_movement
  - attack.credential_access
  - car.2013-07-001
  - car.2019-04-004
  logsource:
    product: windows
    service: null
    category: null
  detection:
    keywords:
      Message:
      - '* mimikatz *'
      - '* mimilib *'
      - '* <3 eo.oe *'
      - '* eo.oe.kiwi *'
      - '* privilege::debug *'
      - '* sekurlsa::logonpasswords *'
      - '* lsadump::sam *'
      - '* mimidrv.sys *'
      - '* p::d *'
      - '* s::l *'
    condition: keywords
  falsepositives:
  - Naughty administrators
  - Penetration test
  level: critical

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



In [ ]:

    
s = searchContext.query('query_string', query='Message.keyword:(*\ mimikatz\ * OR *\ mimilib\ * OR *\ 3\ eo.oe\ * OR *\ eo.oe.kiwi\ * OR *\ privilege\:\:debug\ * OR *\ sekurlsa\:\:logonpasswords\ * OR *\ lsadump\:\:sam\ * OR *\ mimidrv.sys\ * OR *\ p\:\:d\ * OR *\ s\:\:l\ *)')
response = s.execute()
if response.success():
    df = pd.DataFrame((d.to_dict() for d in s.scan()))

Show Results



In [ ]:

    
df.head()