Detection: Deleting Shadow Copies
Description
The vssadmin.exe utility is used to interact with the Volume Shadow Copy Service. Wmic is an interface to the Windows Management Instrumentation. This search looks for either of these tools being used to delete shadow copies.
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Implementation
The detection is based on data that originates from Endpoint Detection and Response (EDR) agents. These agents are designed to provide security-related telemetry from the endpoints where the agent is installed. To implement this search, you must ingest logs that contain the process GUID, process name, and parent process. Additionally, you must ingest complete command-line executions. These logs must be processed using the appropriate Splunk Technology Add-ons that are specific to the EDR product.
Known False Positives
System administrators may resize the shadowstorage for valid purposes. Filter as needed.
Associated Analytic Story
Risk Based Analytics (RBA)
| Risk Message | Risk Score | Impact | Confidence |
|---|---|---|---|
An instance of shadow copy was deleted was deleted using command line - $process.cmd_line$ with process name vssadmin.exe or wmic.exe on host machine - $device.hostname$ by user $actor.user.name$. |
64 | 80 | 80 |
References
Version: 5