AppX Located in Known Staging Directory Added to Deployment Pipeline

title: AppX Located in Known Staging Directory Added to Deployment Pipeline
id: 5cdeaf3d-1489-477c-95ab-c318559fc051
status: test
description: |
    Detects an appx package that was added to the pipeline of the "to be processed" packages that is located in a known folder often used as a staging directory.
references:
    - https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/
    - https://learn.microsoft.com/en-us/windows/win32/appxpkg/troubleshooting
    - https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-11
tags:
    - attack.defense-evasion
logsource:
    product: windows
    service: appxdeployment-server
detection:
    selection_eid:
        EventID: 854
    selection_paths_forward:
        Path|contains: # Paths can be written using forward slash if the "file://" protocol is used
            - ':/Perflogs/'
            - ':/Users/Public/'
            - ':/Windows/Temp/'
            - '/AppdData/Local/Temp/'
            - '/Desktop/'
            - '/Downloads/'
    selection_paths_back:
        Path|contains: # Paths can be written using forward slash if the "file://" protocol is used
            - ':\PerfLogs\'
            - ':\Users\Public\'
            - ':\Windows\Temp\'
            - '\AppdData\Local\Temp\'
            - '\Desktop\'
            - '\Downloads\'
    condition: selection_eid and 1 of selection_paths_*
falsepositives:
    - Unknown
level: high