Windows DNS Gather Network Info
The following analytic identifies a process command line used to enumerate DNS records. Adversaries, threat actors, or red teamers may employ this technique to gather information about a victim's DNS, which can be utilized during targeting. This method was also observed as part of a tool used by the Sandworm APT group in a geopolitical cyber warfare attack. By using the dnscmd.exe Windows application, an attacker can enumerate DNS records for specific domains within the targeted network, potentially aiding in further attacks. This anomaly detection can serve as a valuable starting point for identifying users and hostnames that may be compromised or targeted by adversaries seeking to collect data information.
- Type: Anomaly
- Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Datamodel: Endpoint
- Last Updated: 2023-04-05
- Author: Teoderick Contreras, Splunk
- ID: 347e0892-e8f3-4512-afda-dc0e3fa996f3
Kill Chain Phase
- CIS 10
1 2 3 4 5 6 | tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes where Processes.process_name = "dnscmd.exe" Processes.process = "* /enumrecords *" by Processes.parent_process Processes.process_name Processes.process_id Processes.process_guid Processes.process Processes.user Processes.dest | `drop_dm_object_name("Processes")` | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `windows_dns_gather_network_info_filter`
The SPL above uses the following Macros:
windows_dns_gather_network_info_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
List of fields required to use this analytic.
How To Implement
To successfully implement this search you need to be ingesting information on process that include the name of the process responsible for the changes from your endpoints into the
Endpoint datamodel in the
Processes node. In addition, confirm the latest CIM App 4.20 or higher is installed and the latest TA for the endpoint product.
Known False Positives
network administrator can execute this command to enumerate DNS record. Filter or add other paths to the exclusion as needed.
Associated Analytic Story
|25.0||50||50||A process commandline $process$ to enumerate dns record in $dest$|
The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.
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source | version: 1