Suspicious AppX Package Locations

calendar Dec 1, 2023 · attack.defense_evasion  ·
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Detects an appx package added the pipeline of the "to be processed" packages which is located in suspicious locations

Sigma rule (View on GitHub)

 1title: Suspicious AppX Package Locations
 2id: 5cdeaf3d-1489-477c-95ab-c318559fc051
 3status: test
 4description: Detects an appx package added the pipeline of the "to be processed" packages which is located in suspicious locations
 5references:
 6    - Internal Research
 7    - https://www.sentinelone.com/labs/inside-malicious-windows-apps-for-malware-deployment/
 8    - https://learn.microsoft.com/en-us/windows/win32/appxpkg/troubleshooting
 9    - https://news.sophos.com/en-us/2021/11/11/bazarloader-call-me-back-attack-abuses-windows-10-apps-mechanism/
10author: Nasreddine Bencherchali (Nextron Systems)
11date: 2023/01/11
12tags:
13    - attack.defense_evasion
14logsource:
15    product: windows
16    service: appxdeployment-server
17detection:
18    selection:
19        EventID: 854
20        Path|contains:
21            # Paths can be written using forward slash if the "file://" protocol is used
22            - 'C:\Users\Public\'
23            - '/users/public/'
24            - 'C:\PerfLogs\'
25            - 'C:/perflogs/'
26            - '\Desktop\'
27            - '/desktop/'
28            - '\Downloads\'
29            - '/Downloads/'
30            - 'C:\Windows\Temp\'
31            - 'C:/Windows/Temp/'
32            - '\AppdData\Local\Temp\'
33            - '/AppdData/Local/Temp/'
34    condition: selection
35falsepositives:
36    - Unknown
37level: high

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