SILENTTRINITY stager execution

Detects SILENTTRINITY stager use

Rule Content

- action: global
  title: SILENTTRINITY stager execution
  id: 03552375-cc2c-4883-bbe4-7958d5a980be
  status: experimental
  description: Detects SILENTTRINITY stager use
  references:
  - https://github.com/byt3bl33d3r/SILENTTRINITY
  author: Aleksey Potapov, oscd.community
  date: 2019/10/22
  modified: 2019/11/04
  tags:
  - attack.execution
  detection:
    selection:
      Description|contains: st2stager
    condition: selection
  falsepositives:
  - unknown
  level: high
- logsource:
    category: process_creation
    product: windows
- logsource:
    product: windows
    service: sysmon
  detection:
    selection:
      EventID: 7

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='file_description.keyword:*st2stager*')
response = s.execute()
if response.success():
    df = pd.DataFrame((d.to_dict() for d in s.scan()))



In [ ]:

    
s = searchContext.query('query_string', query='(event_id:"7" AND file_description.keyword:*st2stager*)')
response = s.execute()
if response.success():
    df = pd.DataFrame((d.to_dict() for d in s.scan()))

Show Results



In [ ]:

    
df.head()