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36 lines
1.2 KiB
YAML
36 lines
1.2 KiB
YAML
title: Change Default File Association
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id: 3d3aa6cd-6272-44d6-8afc-7e88dfef7061
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status: experimental
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description: When a file is opened, the default program used to open the file (also called the file association or handler) is checked. File association selections
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are stored in the Windows Registry and can be edited by users, administrators, or programs that have Registry access or by administrators using the built-in assoc
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utility. Applications can modify the file association for a given file extension to call an arbitrary program when a file with the given extension is opened.
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author: Timur Zinniatullin, oscd.community
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date: 2019/10/21
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modified: 2019/11/04
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1042/T1042.yaml
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logsource:
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category: process_creation
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product: windows
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detection:
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selection:
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CommandLine|contains|all:
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- 'cmd'
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- '/c'
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- 'assoc'
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condition: selection
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falsepositives:
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- Admin activity
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fields:
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- Image
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- CommandLine
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- User
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- LogonGuid
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- Hashes
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- ParentProcessGuid
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- ParentCommandLine
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level: low
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tags:
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- attack.persistence
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- attack.t1042
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