LOLBAS/yml/OSBinaries/Explorer.yml

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---
Name: Explorer.exe
Description: Binary used for managing files and system components within Windows
Author: Jai Minton
Created: 2020-06-24
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Commands:
- Command: explorer.exe /root,"C:\Windows\System32\calc.exe"
Description: Execute calc.exe with the parent process spawning from a new instance of explorer.exe
Usecase: Performs execution of specified file with explorer parent process breaking the process tree, can be used for defense evasion.
Category: Execute
Privileges: User
MitreID: T1202
OperatingSystem: Windows XP, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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- Command: explorer.exe C:\Windows\System32\notepad.exe
Description: Execute notepad.exe with the parent process spawning from a new instance of explorer.exe
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Usecase: Performs execution of specified file with explorer parent process breaking the process tree, can be used for defense evasion.
Category: Execute
Privileges: User
MitreID: T1202
OperatingSystem: Windows 10, Windows 11
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Full_Path:
- Path: C:\Windows\explorer.exe
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- Path: C:\Windows\SysWOW64\explorer.exe
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Detection:
- Sigma: https://github.com/SigmaHQ/sigma/blob/08ca62cc8860f4660e945805d0dd615ce75258c1/rules/windows/process_creation/win_susp_explorer_break_proctree.yml
- Sigma: https://github.com/SigmaHQ/sigma/blob/08ca62cc8860f4660e945805d0dd615ce75258c1/rules/windows/process_creation/win_susp_explorer.yml
- Elastic: https://github.com/elastic/detection-rules/blob/f2bc0c685d83db7db395fc3dc4b9729759cd4329/rules/windows/initial_access_via_explorer_suspicious_child_parent_args.toml
- IOC: Multiple instances of explorer.exe or explorer.exe using the /root command line is suspicious.
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Resources:
- Link: https://twitter.com/CyberRaiju/status/1273597319322058752?s=20
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- Link: https://twitter.com/bohops/status/1276356245541335048
- Link: https://twitter.com/bohops/status/986984122563391488
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Acknowledgement:
- Person: Jai Minton
Handle: '@CyberRaiju'
- Person: Jimmy
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Handle: '@bohops'