MavInject Process Injection

Detects process injection using the signed Windows tool Mavinject32.exe

Rule Content

- title: MavInject Process Injection
  id: 17eb8e57-9983-420d-ad8a-2c4976c22eb8
  status: experimental
  description: Detects process injection using the signed Windows tool Mavinject32.exe
  references:
  - https://twitter.com/gN3mes1s/status/941315826107510784
  - https://reaqta.com/2017/12/mavinject-microsoft-injector/
  - https://twitter.com/Hexacorn/status/776122138063409152
  author: Florian Roth
  date: 2018/12/12
  tags:
  - attack.t1055
  - attack.t1218
  logsource:
    category: process_creation
    product: windows
    service: null
  detection:
    selection:
      CommandLine: '* /INJECTRUNNING *'
    condition: selection
  falsepositives:
  - unknown
  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



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s = searchContext.query('query_string', query='process_command_line.keyword:*\ \/INJECTRUNNING\ *')
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()