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Detection rules › Sigma

Network Security Group Rule Created

Status
test
Severity
informational
Log source
product azure, service activitylogs
Author
Fukusuke Takahashi
Source
github.com/Yamato-Security/suzaku-rules

Creates a network security group rule.

MITRE ATT&CK coverage

TacticTechniques
PersistenceNo specific technique

Event coverage

ProviderEvent
Azure-Microsoft.NetworkMicrosoft.Network/networkSecurityGroups/securityRules/write

Rule body yaml

title: Network Security Group Rule Created
id: 63bbdbed-e157-47ba-b731-5d7db61112b1
status: test
description:
    Creates a network security group rule.
references:
    - https://learn.microsoft.com/en-us/azure/virtual-network/manage-network-security-group?tabs=network-security-group-portal#network-security-group-rule
author: Fukusuke Takahashi
date: 2025-12-02
tags:
    - attack.persistence
logsource:
    product: azure
    service: activitylogs
detection:
    selection:
        operationName: MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/SECURITYRULES/WRITE
        properties.statusCode: Created
    condition: selection
falsepositives:
level: informational

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    operationName: MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/SECURITYRULES/WRITE
    properties.statusCode: Created

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
operationNameeq
  • MICROSOFT.NETWORK/NETWORKSECURITYGROUPS/SECURITYRULES/WRITE
properties.statusCodeeq
  • Created