Microsoft Office Protected View Disabled

calendar Aug 17, 2023 · attack.defense_evasion attack.t1562.001  ·
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Detects changes to Microsoft Office protected view registry keys with which the attacker disables this feature.

Sigma rule (View on GitHub)

 1title: Microsoft Office Protected View Disabled
 2id: a5c7a43f-6009-4a8c-80c5-32abf1c53ecc
 3related:
 4    - id: 7c637634-c95d-4bbf-b26c-a82510874b34
 5      type: obsoletes
 6status: test
 7description: Detects changes to Microsoft Office protected view registry keys with which the attacker disables this feature.
 8references:
 9    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md
10    - https://unit42.paloaltonetworks.com/unit42-gorgon-group-slithering-nation-state-cybercrime/
11    - https://yoroi.company/research/cyber-criminal-espionage-operation-insists-on-italian-manufacturing/
12    - https://admx.help/HKCU/software/policies/microsoft/office/16.0/excel/security/protectedview
13author: frack113, Nasreddine Bencherchali (Nextron Systems)
14date: 2021/06/08
15modified: 2023/08/17
16tags:
17    - attack.defense_evasion
18    - attack.t1562.001
19logsource:
20    product: windows
21    category: registry_set
22detection:
23    selection_path:
24        TargetObject|contains|all:
25            - '\SOFTWARE\Microsoft\Office\'
26            - '\Security\ProtectedView\'
27    selection_values_1:
28        Details: 'DWORD (0x00000001)'
29        TargetObject|endswith:
30            - '\DisableAttachementsInPV' # Turn off Protected View for attachments opened from Outlook
31            - '\DisableInternetFilesInPV' # Turn off Protected View for files downloaded from Internet zone
32            - '\DisableIntranetCheck' # Turn off Protected View for file located in UNC paths
33            - '\DisableUnsafeLocationsInPV' # Turn off Protected View for unsafe locations
34    selection_values_0:
35        Details: 'DWORD (0x00000000)'
36        TargetObject|endswith:
37            - '\enabledatabasefileprotectedview'
38            - '\enableforeigntextfileprotectedview'
39    condition: selection_path and 1 of selection_values_*
40falsepositives:
41    - Unlikely
42level: high

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