Correlation by Repository and Risk

Original Source: [splunk source]
Name:Correlation by Repository and Risk
id:8da9fdd9-6a1b-4ae0-8a34-8c25e6be9687
version:2
date:2024-10-17
author:Patrick Bareiss, Splunk
status:deprecated
type:Correlation
Description:This search has been deprecated and updated with Risk Rule for Dev Sec Ops by Repository detection. The following analytic detects by correlating repository and risk score to identify patterns and trends in the data based on the level of risk associated. The analytic adds any null values and calculates the sum of the risk scores for each detection. Then, the analytic captures the source and user information for each detection and sorts the results in ascending order based on the risk score. Finally, the analytic filters the detections with a risk score below 80 and focuses only on high-risk detections.This detection is important because it provides valuable insights into the distribution of high-risk activities across different repositories. It also identifies the most vulnerable repositories that are frequently targeted by potential threats. Additionally, it proactively detects and responds to potential threats, thereby minimizing the impact of attacks and safeguarding critical assets. Finally, it provides a comprehensive view of the risk landscape and helps to make informed decisions to protect the organization's data and infrastructure. False positives might occur so it is important to identify the impact of the attack and prioritize response and mitigation efforts.
Data_source:
search:`risk_index`
| fillnull
| stats sum(risk_score) as risk_score values(source) as signals values(user) as user by repository
| sort - risk_score
| where risk_score > 80
| `correlation_by_repository_and_risk_filter`


how_to_implement:For Dev Sec Ops POC
known_false_positives:unknown
References:
drilldown_searches:
  :
tags:
  analytic_story:
    - 'Dev Sec Ops'
  asset_type:AWS Account
  confidence:100
  impact:70
  message:Correlation triggered for user $user$
  mitre_attack_id:
    - 'T1204.003'
    - 'T1204'
  observable:
    name:'user'
    type:'User'
    - role:
      - 'Victim'
  product:
    - 'Splunk Enterprise'
    - 'Splunk Enterprise Security'
    - 'Splunk Cloud'
  required_fields:
    - '_time'
  risk_score:70
  security_domain:network

tests:
  :
manual_test:None

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