def check_network_unusual()

in security_hub_correlation_cdk/lambdas/create_sh_finding/create_sh_finding.py [0:0]

• 16 lines of code
• 4 McCabe index (conditional complexity)

def check_network_unusual(sh_resource, ddbtable):
    gd_network_list = [
        'Unusual Behaviors/VM/Behavior:EC2-NetworkPortUnusual',
        'Unusual Behaviors/VM/Behavior:EC2-TrafficVolumeUnusual'
        ]
    try:
        for item in gd_network_list:
            network_payload = ddbtable.query(
            IndexName= DYNAMODB_GSI_TYPE,
            KeyConditionExpression=Key('ResourceId').eq(sh_resource) & Key('Types').eq(item)
            )
            if network_payload['Count'] >= 1:
                logger.info('Found GuardDuty Unusual Networking match {} for {}.'.format(item, sh_resource))
                return network_payload
    except ClientError as error_handle:
        logger.error(error_handle.dynamodb_match['Error']['Code'])