Netsh.exe

Use Netsh in order to execute a .dll file and also gain persistence, every time the netsh command is called

Use Proxy execution of .dll

netsh.exe add helper {PATH_ABSOLUTE:.dll}

Evidence

Upstream reference

Environment

Local host

Context

admin

Native

Execute

MITRE

T1546.007

Detection

Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_netsh_helper_dll_persistence.yml

Splunk: github.com/splunk/security_content/blob/2b87b26bdc2a84b65b1355ffbd5174bdbdb1879c/detections/endpoint/processes_launching_netsh.yml

Splunk: github.com/splunk/security_content/blob/08ed88bd88259c03c771c30170d2934ed0a8f878/detections/deprecated/processes_created_by_netsh.yml

IOC: Netsh initiating a network connection

Refs

freddiebarrsmith.com/trix/trix.html

htmlpreview.github.io/?https://github.com/MatthewDemaske/blogbackup/blob/master/netshell.html

liberty-shell.com/sec/2018/07/28/netshlep/

lolbas-project.github.io/lolbas/Binaries/Netsh/