Detectionmediumtest

Arbitrary File Download Via GfxDownloadWrapper.EXE

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

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Victor Sergeev, oscd.communityCreated Fri Oct 09Updated Wed Oct 18eee00933-a761-4cd0-be70-c42fe91731e7windows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic
Detection Logic2 selectors
detection:
    selection:
        Image|endswith: '\GfxDownloadWrapper.exe'
        CommandLine|contains:
            - 'http://'
            - 'https://'
    filter_main_known_urls:
        CommandLine|contains: 'https://gameplayapi.intel.com/'
    condition: selection and not 1 of filter_main_*
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

Rule Metadata
Rule ID
eee00933-a761-4cd0-be70-c42fe91731e7
Status
test
Level
medium
Type
Detection
Created
Fri Oct 09
Modified
Wed Oct 18
Path
rules/windows/process_creation/proc_creation_win_gfxdownloadwrapper_arbitrary_file_download.yml
Raw Tags
attack.command-and-controlattack.t1105
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