AgentExecutor.exe

Commands

1. ExecuteUser T1218

   Execute unsigned powershell scripts

   AgentExecutor.exe -powershell "{PATH_ABSOLUTE:.ps1}" "{PATH_ABSOLUTE:.1.log}" "{PATH_ABSOLUTE:.2.log}" "{PATH_ABSOLUTE:.3.log}" 60000 "C:\Windows\SysWOW64\WindowsPowerShell\v1.0" 0 1

   Spawns powershell.exe and executes a provided powershell script with ExecutionPolicy Bypass argument

   os: Windows 10

   Execute: PowerShell

2. ExecuteUser T1218

   Execute a provided EXE

   AgentExecutor.exe -powershell "{PATH_ABSOLUTE:.ps1}" "{PATH_ABSOLUTE:.1.log}" "{PATH_ABSOLUTE:.2.log}" "{PATH_ABSOLUTE:.3.log}" 60000 "{PATH_ABSOLUTE:folder}" 0 1

   If we place a binary named powershell.exe in the specified folder path, agentexecutor.exe will execute it successfully

   os: Windows 10

   Execute: EXE

Detection

• Sigma https://github.com/SigmaHQ/sigma/blob/19396788dbedc57249a46efed2bb1927abc376d4/rules/windows/process_creation/proc_creation_win_lolbin_agentexecutor.yml
• Sigma https://github.com/SigmaHQ/sigma/blob/19396788dbedc57249a46efed2bb1927abc376d4/rules/windows/process_creation/proc_creation_win_lolbin_agentexecutor_susp_usage.yml