Suspicious RASdial Activity

Detects suspicious process related to rasdial.exe

Rule Content

- title: Suspicious RASdial Activity
  id: 6bba49bf-7f8c-47d6-a1bb-6b4dece4640e
  description: Detects suspicious process related to rasdial.exe
  status: experimental
  references:
  - https://twitter.com/subTee/status/891298217907830785
  author: juju4
  tags:
  - attack.defense_evasion
  - attack.execution
  - attack.t1064
  logsource:
    category: process_creation
    product: windows
    service: null
  detection:
    selection:
      CommandLine:
      - rasdial
    condition: selection
  falsepositives:
  - False positives depend on scripts and administrative tools used in the monitored
    environment
  level: medium

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:("rasdial")')
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()