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37 lines
1.7 KiB
YAML
37 lines
1.7 KiB
YAML
---
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Name: At.exe
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Description: Schedule periodic tasks
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Author: 'Freddie Barr-Smith'
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Created: 2019-09-20
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Commands:
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- Command: C:\Windows\System32\at.exe 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.
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Usecase: Create a recurring task, to eg. to keep reverse shell session(s) alive
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Category: Execute
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Privileges: Local Admin
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MitreID: T1053.002
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OperatingSystem: Windows 7 or older
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Full_Path:
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- Path: C:\WINDOWS\System32\At.exe
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- Path: C:\WINDOWS\SysWOW64\At.exe
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Detection:
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- Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_at_interactive_execution.yml
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- Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/network/zeek/zeek_smb_converted_win_atsvc_task.yml
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- Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/builtin/security/win_security_atsvc_task.yml
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- IOC: C:\Windows\System32\Tasks\At1 (substitute 1 with subsequent number of at job)
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- IOC: C:\Windows\Tasks\At1.job
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- IOC: Registry Key - Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\At1.
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Resources:
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- Link: https://freddiebarrsmith.com/at.txt
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- Link: https://sushant747.gitbooks.io/total-oscp-guide/privilege_escalation_windows.html
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- Link: https://www.secureworks.com/blog/where-you-at-indicators-of-lateral-movement-using-at-exe-on-windows-7-systems
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Acknowledgement:
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- Person: 'Freddie Barr-Smith'
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Handle:
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- Person: 'Riccardo Spolaor'
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Handle:
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- Person: 'Mariano Graziano'
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Handle:
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- Person: 'Xabier Ugarte-Pedrero'
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Handle:
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