Potential Persistence Via COM Hijacking From Suspicious Locations

 1title: Potential Persistence Via COM Hijacking From Suspicious Locations
 2id: 3d968d17-ffa4-4bc0-bfdc-f139de76ce77
 3status: experimental
 4description: Detects potential COM object hijacking where the "Server" (In/Out) is pointing to a suspicious or unsuale location
 5references:
 6    - https://www.microsoft.com/security/blog/2022/07/27/untangling-knotweed-european-private-sector-offensive-actor-using-0-day-exploits/ (idea)
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2022/07/28
 9modified: 2023/09/28
10tags:
11    - attack.persistence
12    - attack.t1546.015
13logsource:
14    category: registry_set
15    product: windows
16detection:
17    selection:
18        TargetObject|contains: '\CLSID\'
19        TargetObject|endswith:
20            - '\InprocServer32\(Default)'
21            - '\LocalServer32\(Default)'
22        Details|contains: # Add more suspicious paths and locations
23            - '\AppData\Local\Temp\'
24            - '\Desktop\'
25            - '\Downloads\'
26            - '\Microsoft\Windows\Start Menu\Programs\Startup\'
27            - '\System32\spool\drivers\color\' # as seen in the knotweed blog
28            - '\Users\Public\'
29            - '\Windows\Temp\'
30            - '%appdata%'
31            - '%temp%'
32            - '%tmp%'
33    condition: selection
34falsepositives:
35    - Probable legitimate applications. If you find these please add them to an exclusion list
36level: high