GCP IAM - Empty user agent

id: 9e0d8632-d33d-4075-979e-c972674f77b3
name: GCP IAM - Empty user agent
description: |
  'Detects requests where user agent is empty.'
severity: Medium
status: Available
requiredDataConnectors:
  - connectorId: GCPIAMDataConnector
    dataTypes:
      - GCP_IAM
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
  - DefenseEvasion
relevantTechniques:
  - T1550
query: |
  GCP_IAM
  | where isempty(HttpUserAgentOriginal)
  | extend AccountName = tostring(split(PayloadAuthenticationinfoPrincipalemail, "@")[0]), AccountUPNSuffix = tostring(split(PayloadAuthenticationinfoPrincipalemail, "@")[1])
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: PayloadAuthenticationinfoPrincipalemail
      - identifier: Name
        columnName: AccountName
      - identifier: UPNSuffix
        columnName: AccountUPNSuffix
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: SrcIpAddr
version: 1.0.1
kind: Scheduled