Suspicious Remote AppX Package Locations

 1title: Suspicious Remote AppX Package Locations
 2id: 8b48ad89-10d8-4382-a546-50588c410f0d
 3status: experimental
 4description: Detects an appx package added the pipeline of the "to be processed" packages which is downloaded from a suspicious domain
 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
12modified: 2024/02/09
13tags:
14    - attack.defense_evasion
15logsource:
16    product: windows
17    service: appxdeployment-server
18detection:
19    selection:
20        EventID: 854
21        Path|contains:
22            - '.githubusercontent.com'       # Includes both gists and github repositories / Michael Haag (idea)
23            - 'anonfiles.com'
24            - 'cdn.discordapp.com'
25            - 'cdn.discordapp.com/attachments/'
26            - 'ddns.net'
27            - 'dl.dropboxusercontent.com'
28            - 'ghostbin.co'
29            - 'glitch.me'
30            - 'gofile.io'
31            - 'hastebin.com'
32            - 'mediafire.com'
33            - 'mega.nz'
34            - 'onrender.com'
35            - 'paste.ee'
36            - 'pastebin.com'
37            - 'pastebin.pl'
38            - 'pastetext.net'
39            - 'privatlab.com'
40            - 'privatlab.net'
41            - 'send.exploit.in'
42            - 'sendspace.com'
43            - 'storage.googleapis.com'
44            - 'storjshare.io'
45            - 'supabase.co'
46            - 'temp.sh'
47            - 'transfer.sh'
48            - 'ufile.io'
49    condition: selection
50falsepositives:
51    - Unknown
52level: high

References

• Internal Research

  
  Read More

• Inside Malicious Windows Apps for Malware Deployment - SentinelOne

  

  Learn how threat actors manipulate Windows to install malicious apps that are trusted by the system, and how to defend against them.

  
  Read More

• Troubleshooting packaging, deployment, and query of Windows apps - Win32 apps

  

  Use these suggestions to troubleshoot problems you experience when packaging, deploying, or querying an app package.

  
  Read More

• BazarLoader ‘call me back’ attack abuses Windows 10 Apps mechanism

  

  The unusual technique invokes the Windows App Installer to deliver malware

  
  Read More

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