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Azure public-facing Virtual Machines can be secured from brute force attacks with the solution’s ready to use workflows that block attacker IP addresses in the Virtual Machine’s Network Security Groups. The Azure Security Center Alerts types that can be processed automatically are:

*   Suspicious authentication activity
*   Possible incoming SQL brute force attempts detected
*   Web Fingerprint Detected
*   Failed SSH brute force attack

Solution Workflows:

  

**1\. AzureCreateNSGsForNIs**

*   creates NSGs for the Virtual Machines that don't have at least one associated with one of its Network Interfaces
*   (optional) it can be scheduled to run 1st - the other workflows will have no effect froma security resolution point of view if deny security rules cant be created for the attacked VM

**2\. GetAzureSecurityCenterAlerts**

*   gets the Azure Security Center alerts for the supported Brute Force attack types and adds them to an Orchestrator Queue for processing

**3\. AzureVMsAttackersBlock\_AddSecurityRuleToNSG**

*   retrieves the pending Orchestrator queue items 
*   the new Security Rules have their priority computed dynamically
*   if the attacker IP is already blocked in an NSG, it will be skipped

**4\. Block\_AttackerIP\_in\_VM\_NSGs**

*   the workflow can be executed on-demand from the Orchestrator web or mobile apps
*   the specified IP is blocked in all the Network Security Groups associated with the input Virtual Machine

Workflow Solution built on top of the official UiPath IT Automation activities for automating the resolution of Azure brute force attacks security incidents targeting public facing virtual machines.

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MIT License Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Security Orchestration Automation and Response