Adversaries may directly access a volume to bypass file access controls and file system monitoring. Windows allows programs to have direct access to logical volumes. Programs with direct access may read and write files directly from the drive by analyzing file system data structures. This technique may bypass Windows file access controls as well as file system monitoring tools.[1]
Utilities, such as NinjaCopy, exist to perform these actions in PowerShell.[2] Adversaries may also use built-in or third-party utilities (such as vssadmin, wbadmin, and esentutl) to create shadow copies or backups of data from system volumes.[3]
References
- Hakobyan, A. (2009, January 8). FDump - Dumping File Sectors Directly from Disk using Logical Offsets. Retrieved November 12, 2014.
- Bialek, J. (2015, December 16). Invoke-NinjaCopy.ps1. Retrieved June 2, 2016.
- LOLBAS. (n.d.). Esentutl.exe. Retrieved September 3, 2019.
Powiązane zgłoszenia
| Typ powiązania | Zgłoszenie |
|---|---|
| is related to | Techniques |
| is blocked by | Detection of Direct Volume Access for File System Evasion |
| is blocked by | Behavior Prevention on Endpoint |
| is blocked by | User Account Management |
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