LOLBAS/yml/OSBinaries/Ilasm.yml

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---
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Name: Ilasm.exe
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Description: used for compile c# code into dll or exe.
Author: Hai vaknin (lux)
Created: 2020-03-17
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Commands:
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- Command: ilasm.exe C:\public\test.txt /exe
Description: Binary file used by .NET to compile C#/intermediate (IL) code to .exe
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Usecase: Compile attacker code on system. Bypass defensive counter measures.
Category: Compile
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Privileges: User
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MitreID: T1127
OperatingSystem: Windows 7, Windows 10, Windows 11
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- Command: ilasm.exe C:\public\test.txt /dll
Description: Binary file used by .NET to compile C#/intermediate (IL) code to dll
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Usecase: A description of the usecase
Category: Compile
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Privileges: User
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MitreID: T1127
OperatingSystem: Windows 7, Windows 10, Windows 11
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Full_Path:
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- Path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\ilasm.exe
- Path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ilasm.exe
Code_Sample:
- Code:
Detection:
- IOC: Ilasm may not be used often in production environments (such as on endpoints)
- Sigma: https://github.com/SigmaHQ/sigma/blob/bea6f18d350d9c9fdc067f93dde0e9b11cc22dc2/rules/windows/process_creation/proc_creation_win_lolbin_ilasm.yml
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Resources:
- Link: https://github.com/LuxNoBulIshit/BeforeCompileBy-ilasm/blob/master/hello_world.txt
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Acknowledgement:
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- Person: Hai Vaknin(Lux)
Handle: '@VakninHai'
- Person: Lior Adar
Handle: