Schedule periodic tasks
C:\Windows\System32\at.exe 09:00 /interactive /every:m,t,w,th,f,s,su C:\Windows\System32\revshell.exe
Create a recurring task to execute every day at a specific time.
Create a recurring task, to eg. to keep reverse shell session(s) alive
C:\WINDOWS\System32\At.exe, C:\WINDOWS\SysWOW64\At.exe
Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_at_interactive_execution.yml, Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/network/zeek/zeek_smb_converted_win_atsvc_task.yml, Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/builtin/security/win_security_atsvc_task.yml, IOC: C:\Windows\System32\Tasks\At1 (substitute 1 with subsequent number of at job), IOC: C:\Windows\Tasks\At1.job, IOC: Registry Key - Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\At1.
Freddie Barr-Smith, Riccardo Spolaor, Mariano Graziano, Xabier Ugarte-Pedrero