Create proc_creation_win_reg_add_AutoAdminLogon_key.yml

[Mahir-Ali-khan]

Summary of the Pull Request

Detects the modification of registry values DefaultUserName,DefaultPassword and AutoAdminLogon to enable automatic logon. Attacker use this technique to achieve persistence.

Changelog

Example Log Event

Process Create:
RuleName: -
UtcTime: 2024-10-16 11:02:12.493
ProcessGuid: {c419c85b-9d34-670f-8328-000000004700}
ProcessId: 12348
Image: C:\Windows\System32\reg.exe
FileVersion: 10.0.22621.1 (WinBuild.160101.0800)
Description: Registry Console Tool
Product: Microsoft® Windows® Operating System
Company: Microsoft Corporation
OriginalFileName: reg.exe
CommandLine: reg add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v AutoAdminLogon /t REG_SZ /d 1 /f
CurrentDirectory: C:\Users\user
User: XXXXXXXXXX\XXXXXXXX
LogonGuid: {c419c85b-9d89-670c-8fed-187f00000000}
LogonId: 0xF17ED8F
TerminalSessionId: 2
IntegrityLevel: Medium
Hashes: MD5=CDB58D0BCABE76AFC60428F364834463,SHA256=411AE446FE37B30C0727888C7FA5E88994A46DAFD41AA5B3B06C9E884549AFDE,IMPHASH=1085BD82B37A225F6D356012D2E69C3D
ParentProcessGuid: {c419c85b-8ebb-670f-4827-000000004700}
ParentProcessId: 21116
ParentImage: C:\Windows\System32\cmd.exe
ParentCommandLine: "C:\WINDOWS\system32\cmd.exe"
ParentUser: XXXXXXXXXX\XXXXXXXX

Fixed Issues

SigmaHQ Rule Creation Conventions

• If your PR adds new rules, please consider following and applying these conventions

[frack113]

Hi,
Sorry,it took me a while to do the research but the rule https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_reg_susp_paths.yml cover it.
Find atomic test from lockbit
https://github.com/redcanaryco/atomic-red-team/blob/8ac5c4f84692b11ea2832d18d3dc6f1ce7fb4e41/atomics/T1562.001/T1562.001.md#atomic-test-33---lockbit-black---use-registry-editor-to-turn-on-automatic-logon--cmd

reg add "HKLM\Software\Policies\Microsoft\Windows NT\CurrentVersion\Winlogon" /v AutoAdminLogon /t REG_DWORD /d 1 /f
reg add "HKLM\Software\Policies\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultUserName /t REG_SZ /d Administrator /f
reg add "HKLM\Software\Policies\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultDomainName /t REG_SZ /d contoso.com /f
reg add "HKLM\Software\Policies\Microsoft\Windows NT\CurrentVersion\Winlogon" /v DefaultPassword /t REG_SZ /d password1 /f

Original rule reference can be updated if you want.