Adversaries may establish persistence by executing malicious content triggered by Netsh Helper DLLs. Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system. It contains functionality to add helper DLLs for extending functionality of the utility.[1] The paths to registered netsh.exe helper DLLs are entered into the Windows Registry at HKLM\SOFTWARE\Microsoft\Netsh.
Adversaries can use netsh.exe helper DLLs to trigger execution of arbitrary code in a persistent manner. This execution would take place anytime netsh.exe is executed, which could happen automatically, with another persistence technique, or if other software (ex: VPN) is present on the system that executes netsh.exe as part of its normal functionality.[2],[3]
References
- Microsoft. (n.d.). Using Netsh. Retrieved February 13, 2017.
- Smeets, M. (2016, September 26). NetshHelperBeacon. Retrieved February 13, 2017.
- Demaske, M. (2016, September 23). USING NETSHELL TO EXECUTE EVIL DLLS AND PERSIST ON A HOST. Retrieved April 8, 2017.
Saistītie uzdevumi
| Saites veids | Uzdevums |
|---|---|
| is related to | Techniques |
| is blocked by | Detection Strategy for Netsh Helper DLL Persistence via Registry and Child Process Monitoring (Windows) |
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