LOLBAS/yml/OSBinaries/At.yml

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---
Name: At.exe
Description: Schedule periodic tasks
Author: 'Freddie Barr-Smith'
Created: '2019-09-20'
Commands:
- Command: C:\Windows\System32\at.exe at 09:00 /interactive /every:m,t,w,th,f,s,su C:\Windows\System32\revshell.exe
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Description: Create a recurring task to execute every day at a specific time.
Usecase: Create a recurring task, to eg. to keep reverse shell session(s) alive
Category: Execute
Privileges: Local Admin
MitreID: T1053
MitreLink: https://attack.mitre.org/wiki/Technique/T1053
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OperatingSystem: Windows 7 or older
Full_Path:
- Path: C:\WINDOWS\System32\At.exe
- Path: C:\WINDOWS\SysWOW64\At.exe
Detection:
- IOC: Scheduled task is created
- IOC: Windows event log - type 3 login
- IOC: C:\Windows\System32\Tasks\At1 (substitute 1 with subsequent number of at job)
- IOC: C:\Windows\Tasks\At1.job
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- IOC: Registry Key - Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\At1.
Resources:
- Link: https://freddiebarrsmith.com/at.txt
- Link: https://sushant747.gitbooks.io/total-oscp-guide/privilege_escalation_windows.html - Escalate to System from Administrator
- Link: https://www.secureworks.com/blog/where-you-at-indicators-of-lateral-movement-using-at-exe-on-windows-7-systems
Acknowledgement:
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- Person: 'Freddie Barr-Smith'
Handle:
- Person: 'Riccardo Spolaor'
Handle:
- Person: 'Mariano Graziano'
Handle:
- Person: 'Xabier Ugarte-Pedrero'
Handle:
---