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MediumSplunk security contentRaven Tait +1

Windows Short Lived DNS Record

The following analytic identifies the creation and quick deletion of a DNS object within 300 seconds in an Active Directory environment, indicative of a potential attack abusing DNS. This detection leverages Windows…

Description

The following analytic identifies the creation and quick deletion of a DNS object within 300 seconds in an Active Directory environment, indicative of a potential attack abusing DNS. This detection leverages Windows Security Event Codes 5136 and 5137, analyzing the duration between these events. This activity is significant as temporary DNS entries allows attackers to cause unexpecting network trafficking, leading to potential compromise.

Detection logic

Detection requirements

Platform
ESXiLinuxmacOSNetwork DevicesWindows

The rule states no platform. This is derived from the 3 ATT&CK techniques it maps to.

Log source category
windows_event_log_security_5136windows_event_log_security_5137

Known benign triggers

  • Creating and deleting a DNS server object within 30 seconds or less is unusual but not impossible in a production environment. Filter as needed.

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