Runonce.exe

type: OSBinaries

Executes a Run Once Task that has been configured in the registry

Full path

C:\Windows\System32\runonce.exe
C:\Windows\SysWOW64\runonce.exe

Commands

ExecuteAdministrator T1218
Persistence, bypassing defensive counter measures
```
Runonce.exe /AlternateShellStartup
```
Executes a Run Once Task that has been configured in the registry.
os: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
Execute: CMD

Detection

Sigma https://github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/registry/registry_event/registry_event_runonce_persistence.yml
Sigma https://github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_runonce_execution.yml
Elastic https://github.com/elastic/detection-rules/blob/2926e98c5d998706ef7e248a63fb0367c841f685/rules/windows/persistence_run_key_and_startup_broad.toml
IOCRegisty key add - HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\YOURKEY

Resources

acknowledgement: Pierre-Alexandre Braeken @pabraeken