Skill15.5k repo starsupdated 12d ago

analyzing-azure-activity-logs-for-threats

This Claude Code skill enables security analysts to query Azure Monitor activity logs and sign-in logs using Kusto Query Language to detect threats such as privilege escalation, suspicious resource modifications, and anomalous authentication patterns. Use it during security incident investigations, threat hunting operations, and when validating detection coverage for Azure-based attack techniques in SOC environments.

View source Repository: Anthropic-Cybersecurity-Skills

Install in Claude Code

Copy

git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills /tmp/analyzing-azure-activity-logs-for-threats && cp -r /tmp/analyzing-azure-activity-logs-for-threats/skills/analyzing-azure-activity-logs-for-threats ~/.claude/skills/analyzing-azure-activity-logs-for-threats

Then start a new Claude Code session; the skill loads automatically.

Definition

SKILL.md

# Analyzing Azure Activity Logs for Threats


## When to Use

- When investigating security incidents that require analyzing azure activity logs for threats
- When building detection rules or threat hunting queries for this domain
- When SOC analysts need structured procedures for this analysis type
- When validating security monitoring coverage for related attack techniques

## Prerequisites

- Familiarity with security operations concepts and tools
- Access to a test or lab environment for safe execution
- Python 3.8+ with required dependencies installed
- Appropriate authorization for any testing activities

## Instructions

Use azure-monitor-query to execute KQL queries against Azure Log Analytics workspaces,
detecting suspicious admin operations and sign-in anomalies.

```python
from azure.identity import DefaultAzureCredential
from azure.monitor.query import LogsQueryClient
from datetime import timedelta

credential = DefaultAzureCredential()
client = LogsQueryClient(credential)

response = client.query_workspace(
    workspace_id="WORKSPACE_ID",
    query="AzureActivity | where OperationNameValue has 'MICROSOFT.AUTHORIZATION/ROLEASSIGNMENTS/WRITE' | take 10",
    timespan=timedelta(hours=24),
)
```

Key detection queries:
1. Role assignment changes (privilege escalation)
2. Resource group and subscription modifications
3. Key vault secret access from new IPs
4. Network security group rule changes
5. Conditional access policy modifications

## Examples

```python
# Detect new Global Admin role assignments
query = '''
AuditLogs
| where OperationName == "Add member to role"
| where TargetResources[0].modifiedProperties[0].newValue has "Global Administrator"
'''
```