Arbitrary File Download Via GfxDownloadWrapper.EXE

Detects execution of GfxDownloadWrapper.exe with a URL as an argument to download file.

Sigma rule (View on GitHub)

 1title: Arbitrary File Download Via GfxDownloadWrapper.EXE
 2id: eee00933-a761-4cd0-be70-c42fe91731e7
 3status: test
 4description: Detects execution of GfxDownloadWrapper.exe with a URL as an argument to download file.
 5references:
 6    - https://lolbas-project.github.io/lolbas/HonorableMentions/GfxDownloadWrapper/
 7author: Victor Sergeev, oscd.community
 8date: 2020-10-09
 9modified: 2023-10-18
10tags:
11    - attack.command-and-control
12    - attack.t1105
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection:
18        Image|endswith: '\GfxDownloadWrapper.exe'
19        CommandLine|contains:
20            - 'http://'
21            - 'https://'
22    filter_main_known_urls:
23        CommandLine|contains: 'https://gameplayapi.intel.com/'
24    condition: selection and not 1 of filter_main_*
25falsepositives:
26    - Unknown
27level: medium

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