ELK4QRadar

This project was created to help SOC MSSP teams that use QRadar SIEM with multiple clients to collecte and centralize monitoring statistics from all QRadar deployments.

Project is available on github

Guide

1. PUT _template/<YOUR_TEMPLATE_NAME>. In this repository we provide an index template that you can in your Elastic Stack

2. Populate the YAML files in /etc/logstash with the appropriate data to your context. We Provide samples in this project:

   • timezone.yml: Contains dictionary of client name and their correspondant timezones.
   • clientnames.yml : Contains a dictionary of input configuration tags and their correspondant client names
3. Copy conf.d configuration in your Logstash conf.d folder and customize to your needs.

   • input sample
   • filter sample
   • output sample
4. Create a /home/USER/Offenses/ folder to save the extracted search data from QRadar in CSV.

5. Create the following scripted fields in Kibana

Name	Lang	Script	Format
offense.day_of_week	painless	doc['@timestamp'].value.dayOfWeekEnum	String
offense.hour_of_day	painless	doc['@timestamp'].value.hourOfDay	Number

Metrics samples

• Busiest Day

• Busiest Hour

• Offenses average by day of week

Index Template

I created a custom template for this use case:

{
    "index_patterns": [
        "soc-statistics-offenses-*"
    ],
    "template": {
        "settings": {
            "number_of_shards": 1,
            "number_of_replicas": 0
        },
        "mappings": {
            "dynamic_templates": [
                {
                    "strings_as_keyword": {
                        "mapping": {
                            "ignore_above": 1024,
                            "type": "keyword"
                        },
                        "match_mapping_type": "string"
                    }
                }
            ],
            "properties": {
                "@timestamp": {
                    "type": "date"
                },
                "offense": {
                    "properties": {
                        "owner": {
                            "type": "keyword"
                        },
                        "note": {
                            "properties": {
                                "date": {
                                    "format": "MMM d, yyyy, h:mm:ss a",
                                    "type": "date"
                                }
                            }
                        },
                        "storagetime": {
                            "format": "yyyy-MM-dd hh:mm:ss a",
                            "type": "date"
                        },
                        "assigned": {
                            "properties": {
                                "date": {
                                    "format": "MMM d, yyyy, h:mm:ss a",
                                    "type": "date"
                                }
                            }
                        },
                        "id": {
                            "type": "keyword"
                        },
                        "starttime": {
                            "format": "yyyy-MM-dd hh:mm:ss a",
                            "type": "date"
                        },
                        "logsourcetime": {
                            "format": "yyyy-MM-dd hh:mm:ss a",
                            "type": "date"
                        },
                        "close": {
                            "properties": {
                                "date": {
                                    "format": "MMM d, yyyy, h:mm:ss a",
                                    "type": "date"
                                },
                                "reason": {
                                    "type": "text"
                                },
                                "analyst": {
                                    "type": "keyword"
                                }
                            }
                        },
                        "hour_of_day": {
                            "type": "keyword"
                        },
                        "status": {
                            "type": "keyword"
                        },
                        "day_of_week": {
                            "type": "keyword"
                        }
                    }
                },
                "domain": {
                    "properties": {
                        "name": {
                            "type": "keyword"
                        }
                    }
                },
                "rule": {
                    "properties": {
                        "severity": {
                            "type": "keyword"
                        },
                        "risk_score": {
                            "type": "keyword"
                        },
                        "name": {
                            "type": "keyword"
                        },
                        "threat": {
                            "properties": {
                                "technique": {
                                    "properties": {
                                        "name": {
                                            "type": "keyword"
                                        },
                                        "id": {
                                            "type": "keyword"
                                        }
                                    }
                                },
                                "tactic": {
                                    "properties": {
                                        "name": {
                                            "type": "keyword"
                                        },
                                        "id": {
                                            "type": "keyword"
                                        }
                                    }
                                }
                            }
                        },
                        "category": {
                            "type": "keyword"
                        },
                        "class": {
                            "type": "keyword"
                        }
                    }
                },
                "client": {
                    "properties": {
                        "name": {
                            "type": "keyword"
                        }
                    }
                },
                "analyst": {
                    "type": "nested",
                    "properties": {
                        "notes": {
                            "type": "text"
                        },
                        "username": {
                            "type": "keyword"
                        }
                    }
                },
                "event": {
                    "properties": {
                        "timezone": {
                            "type": "keyword"
                        },
                        "name": {
                            "type": "keyword"
                        }
                    }
                },
                "tags": {
                    "type": "keyword"
                }
            }
        }
    }
}

Logstash Configuration Files

This part of the project contains logstash configuration files that will process and parse files CSV files saved by the python script in /home/elk/Offenses notice here that I am storing my AQL search results in Offenses folder at elk user's home folder.

PS : Please see the index template definition to have basic understanding of the defined fields used in this project.

Logstash pipelines ar organized in three parts :

• Input configurations : Make an input configuration for each file you wanna ingest into elasticsearch.

Example :

input {
   file {
           path => "/home/<USER>/<FOLDER NAME>/<FILENAME>.csv"
           start_position => beginning
           tags => "<MY_CLIENT>"
           type => "OFFENSES"
       }
}

• Filter configuration : For processing and enriching the incoming data and normalizing event fields.

• Output configuration : Used for sending data to Elasticsearch.

Example :

output {
   if [type] == "OFFENSES" {
       elasticsearch {
           hosts => ["https://localhost:9200"]
           index => "soc-statistics-offenses-%{[client][name]}-%{+yyyy.MM}"
           #manage_template => false
           cacert => "/etc/logstash/root-ca.pem"
           user => "<USERNAME>"
           password => "<PASSWORD>"
           ssl => true
         ssl_certificate_verification => false
       }
   }
}