Scenario: System administrators in your organization sometimes use tools like PsExec and DCOM to manage systems remotely. However, because your entire organization recently began working from home, you have more concerns around the security of these tools. You want to investigate usage of these tools to make sure that bad actors aren't using them to move laterally within your network.
How Splunk software can help
You can use Splunk software to examine Windows security logs for unusual authentication events and then investigate events taken by those logged-in users.
What you need
The following technologies, data, and integrations are useful in successfully implementing this use case.
The best person to implement this use case is a security analyst or threat hunter who is familiar with endpoint data. This person might come from your team, a Splunk partner, or Splunk onDemand Services.
Detecting suspicious lateral movement with legitimate sysadmin tools using Splunk software can last from several hours to several days, depending on the size of your organization.
The following technologies, data, and integrations are useful in successfully implementing this use case:
How to use Splunk software for this use case
You can run many investigations with Splunk software to detect suspicious lateral movement with legitimate sysadmin tools. Depending on what information you have available, you might find it useful to identify some or all of the following:
- Remote logins to a host
- Process creation events
- User account changed
- Registry activities
- Registry keys used for privilege escalation
- Sc.exe manipulating Windows services
Other steps you can take
To maximize their benefit, the how-to articles linked in the previous section likely need to tie into existing processes at your organization or become new standard processes. These processes commonly impact success with this use case:
- Developing and maintaining authentication baselines for users
- Eliminating outdated or unpatched systems in your environment
- Enforcing least-privileged user policies to limit access to systems and resources
- Enforcing robust password management policies and multi-factor authentication
The content in this use case comes from a previously published blog, one of the thousands of Splunk resources available to help users succeed. These additional Splunk resources might help you understand and implement this specific use case:
- Conf Talk: Identify lateral movement and malicious backdoors with WMI
- Blog: Great (Endpoint) moments with Mr. Lincoln
- Blog: Peeping Through Windows (Logs)
- Blog: ATT&CK-ing the adversary
How to assess your results
Measuring impact and benefit is critical to assessing the value of security operations. The following are example metrics that can be useful to monitor when implementing this use case:
- Time to detection: The time between when an adversary gained access to your network to when you detected their presence
- Lateral movement blocked: Number of times an adversary was unsuccessful at gaining access to systems through lateral movement