Contrast Exploits

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Id	e1abb6ed-be18-40fd-be58-3d3d84041daf
Rulename	Contrast Exploits
Description	Creates Incidents for Exploit events sourced from the Contrast Protect agent.
Severity	High
Tactics	InitialAccess Exfiltration
Techniques	T1566
Required data connectors	CefAma ContrastProtect ContrastProtectAma
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Contrast Protect/Analytic Rules/ContrastExploits.yaml
Version	1.0.2
Arm template	e1abb6ed-be18-40fd-be58-3d3d84041daf.json

KQL

let extract_data=(a:string, k:string) {
  parse_urlquery(replace(@';', @'&', a))["Query Parameters"][k]
};

CommonSecurityLog 
| where DeviceVendor == "Contrast Security"
| where AdditionalExtensions contains "EXPLOITED"
| extend DeviceProduct
| extend SourceIP
| extend DeviceVersion
| extend Activity
| extend ApplicationProtocol
| extend RequestURL
| extend RequestMethod
| extend Rule = extract_data(AdditionalExtensions, 'pri')

YAML

id: e1abb6ed-be18-40fd-be58-3d3d84041daf
requiredDataConnectors:
- connectorId: ContrastProtect
  dataTypes:
  - CommonSecurityLog
- connectorId: ContrastProtectAma
  dataTypes:
  - CommonSecurityLog
- connectorId: CefAma
  dataTypes:
  - CommonSecurityLog
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: SourceIP
  entityType: IP
- fieldMappings:
  - identifier: Url
    columnName: RequestURL
  entityType: URL
- fieldMappings:
  - identifier: Name
    columnName: ApplicationProtocol
  entityType: CloudApplication
- fieldMappings:
  - identifier: Name
    columnName: Activity
  - identifier: Category
    columnName: Rule
  entityType: Malware
query: |
  let extract_data=(a:string, k:string) {
    parse_urlquery(replace(@';', @'&', a))["Query Parameters"][k]
  };

  CommonSecurityLog 
  | where DeviceVendor == "Contrast Security"
  | where AdditionalExtensions contains "EXPLOITED"
  | extend DeviceProduct
  | extend SourceIP
  | extend DeviceVersion
  | extend Activity
  | extend ApplicationProtocol
  | extend RequestURL
  | extend RequestMethod
  | extend Rule = extract_data(AdditionalExtensions, 'pri')  
triggerThreshold: 0
kind: Scheduled
severity: High
queryPeriod: 5m
customDetails:
  Details: AdditionalExtensions
  Application: ApplicationProtocol
  Agent: DeviceProduct
  AgentVersion: DeviceVersion
  Attack: Activity
tactics:
- InitialAccess
- Exfiltration
queryFrequency: 5m
status: Available
relevantTechniques:
- T1566
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Contrast Protect/Analytic Rules/ContrastExploits.yaml
description: |
    'Creates Incidents for Exploit events sourced from the Contrast Protect agent.'
name: Contrast Exploits
version: 1.0.2

ARM