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Detection rules › Sigma

Google Cloud DNS Zone Modified or Deleted

Status
test
Severity
medium
Log source
product gcp, service gcp.audit
Author
Austin Songer @austinsonger
Source
github.com/SigmaHQ/sigma

Identifies when a DNS Zone is modified or deleted in Google Cloud.

MITRE ATT&CK coverage

TacticTechniques
ImpactNo specific technique

Telemetry coverage

PlatformRecord / event type
GCPdns.managedZones.delete: Delete managed zone
GCPdns.managedZones.patch: Patch managed zone
GCPdns.managedZones.update: Update managed zone

Rule body

title: Google Cloud DNS Zone Modified or Deleted
id: 28268a8f-191f-4c17-85b2-f5aa4fa829c3
status: test
description: Identifies when a DNS Zone is modified or deleted in Google Cloud.
references:
    - https://cloud.google.com/dns/docs/reference/v1/managedZones
author: Austin Songer @austinsonger
date: 2021-08-15
modified: 2022-10-09
tags:
    - attack.impact
logsource:
    product: gcp
    service: gcp.audit
detection:
    selection:
        gcp.audit.method_name:
            - Dns.ManagedZones.Delete
            - Dns.ManagedZones.Update
            - Dns.ManagedZones.Patch
    condition: selection
falsepositives:
    - Unknown
level: medium

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    gcp.audit.method_name:
        - Dns.ManagedZones.Delete
        - Dns.ManagedZones.Update
        - Dns.ManagedZones.Patch

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
gcp.audit.method_nameeq
  • Dns.ManagedZones.Delete
  • Dns.ManagedZones.Patch
  • Dns.ManagedZones.Update
field:"gcp::method_name" kind:eq