LOLBAS/yml/OSLibraries/Syssetup.yml

---
Name: Syssetup.dll
Description: Windows NT System Setup
Author:
Created: 2018-05-25
Commands:
  - Command: rundll32.exe syssetup.dll,SetupInfObjectInstallAction DefaultInstall 128 c:\test\shady.inf
    Description: Execute the specified (local or remote) .wsh/.sct script with scrobj.dll in the .inf file by calling an information file directive (section name specified).
    Usecase: Run local or remote script(let) code through INF file specification (Note May pop an error window).
    Category: AWL Bypass
    Privileges: User
    MitreID: T1218.011
    OperatingSystem: Windows 10, Windows 11
  - Command: rundll32 syssetup.dll,SetupInfObjectInstallAction DefaultInstall 128 c:\temp\something.inf
    Description: Launch an executable file via the SetupInfObjectInstallAction function and .inf file section directive.
    Usecase: Load an executable payload.
    Category: Execute
    Privileges: User
    MitreID: T1218.011
    OperatingSystem: Windows 10, Windows 11
Full_Path:
  - Path: c:\windows\system32\syssetup.dll
  - Path: c:\windows\syswow64\syssetup.dll
Code_Sample:
  - Code: https://raw.githubusercontent.com/huntresslabs/evading-autoruns/master/shady.inf
  - Code: https://gist.github.com/enigma0x3/469d82d1b7ecaf84f4fb9e6c392d25ba#file-backdoor-minimalist-sct
  - Code: https://gist.github.com/homjxi0e/87b29da0d4f504cb675bb1140a931415
Detection:
  - Sigma: https://github.com/SigmaHQ/sigma/blob/08ca62cc8860f4660e945805d0dd615ce75258c1/rules/windows/process_creation/win_susp_rundll32_activity.yml
  - Splunk: https://github.com/splunk/security_content/blob/86a5b644a44240f01274c8b74d19a435c7dae66e/detections/endpoint/detect_rundll32_application_control_bypass___syssetup.yml
Resources:
  - Link: https://twitter.com/pabraeken/status/994392481927258113
  - Link: https://twitter.com/harr0ey/status/975350238184697857
  - Link: https://twitter.com/bohops/status/975549525938135040
  - Link: https://windows10dll.nirsoft.net/syssetup_dll.html
Acknowledgement:
  - Person: Pierre-Alexandre Braeken (Execute)
    Handle: '@pabraeken'
  - Person: Matt harr0ey (Execute)
    Handle: '@harr0ey'
  - Person: Jimmy (Scriptlet)
    Handle: '@bohops'
---
Fixed incorrect MItreLink 2021-01-10 16:26:27 +01:00			`---`
			`Name: Syssetup.dll`
			`Description: Windows NT System Setup`
			`Author:`
			`Created: 2018-05-25`
			`Commands:`
			`- Command: rundll32.exe syssetup.dll,SetupInfObjectInstallAction DefaultInstall 128 c:\test\shady.inf`
			`Description: Execute the specified (local or remote) .wsh/.sct script with scrobj.dll in the .inf file by calling an information file directive (section name specified).`
Fix Usecase field 2021-01-10 16:54:00 +01:00			`Usecase: Run local or remote script(let) code through INF file specification (Note May pop an error window).`
Fixed incorrect MItreLink 2021-01-10 16:26:27 +01:00			`Category: AWL Bypass`
			`Privileges: User`
MITRE ATT&CK realignment sprint 2021-11-05 19:58:26 +01:00			`MitreID: T1218.011`
Adding more missed-out entries 2021-12-15 12:46:04 +01:00			`OperatingSystem: Windows 10, Windows 11`
Fixed incorrect MItreLink 2021-01-10 16:26:27 +01:00			`- Command: rundll32 syssetup.dll,SetupInfObjectInstallAction DefaultInstall 128 c:\temp\something.inf`
			`Description: Launch an executable file via the SetupInfObjectInstallAction function and .inf file section directive.`
Fix Usecase field 2021-01-10 16:54:00 +01:00			`Usecase: Load an executable payload.`
Fixed incorrect MItreLink 2021-01-10 16:26:27 +01:00			`Category: Execute`
			`Privileges: User`
MITRE ATT&CK realignment sprint 2021-11-05 19:58:26 +01:00			`MitreID: T1218.011`
Adding more missed-out entries 2021-12-15 12:46:04 +01:00			`OperatingSystem: Windows 10, Windows 11`
Fixed incorrect MItreLink 2021-01-10 16:26:27 +01:00			`Full_Path:`
			`- Path: c:\windows\system32\syssetup.dll`
			`- Path: c:\windows\syswow64\syssetup.dll`
			`Code_Sample:`
			`- Code: https://raw.githubusercontent.com/huntresslabs/evading-autoruns/master/shady.inf`
			`- Code: https://gist.github.com/enigma0x3/469d82d1b7ecaf84f4fb9e6c392d25ba#file-backdoor-minimalist-sct`
			`- Code: https://gist.github.com/homjxi0e/87b29da0d4f504cb675bb1140a931415`
			`Detection:`
Detection Resources and Other Updates (#179) * Add detection links for scripts * Add detection links for OtherMSBins. Fixed and updated as needed. * Add detection links for MSBins. Fixed and updated as needed. * Add detection links for oslibraries * Updating template for Detections * Removing empty Detection:Sigma entries * Remove redundant blank line * Replacing commit URL with file URL Co-authored-by: root <root@DESKTOP-5CR935D.localdomain> Co-authored-by: Wietze <wietze@users.noreply.github.com> 2021-11-15 14:19:03 +01:00			`- Sigma: https://github.com/SigmaHQ/sigma/blob/08ca62cc8860f4660e945805d0dd615ce75258c1/rules/windows/process_creation/win_susp_rundll32_activity.yml`
			`- Splunk: https://github.com/splunk/security_content/blob/86a5b644a44240f01274c8b74d19a435c7dae66e/detections/endpoint/detect_rundll32_application_control_bypass___syssetup.yml`
Fixed incorrect MItreLink 2021-01-10 16:26:27 +01:00			`Resources:`
			`- Link: https://twitter.com/pabraeken/status/994392481927258113`
			`- Link: https://twitter.com/harr0ey/status/975350238184697857`
			`- Link: https://twitter.com/bohops/status/975549525938135040`
			`- Link: https://windows10dll.nirsoft.net/syssetup_dll.html`
			`Acknowledgement:`
			`- Person: Pierre-Alexandre Braeken (Execute)`
			`Handle: '@pabraeken'`
			`- Person: Matt harr0ey (Execute)`
			`Handle: '@harr0ey'`
			`- Person: Jimmy (Scriptlet)`
			`Handle: '@bohops'`
			`---`