Kevin Branch
b478f24985
When logging into Windows Core, userinit.exe normalls calls PowerShell.exe without parameters to bring up a PowerShell window.
36 lines
1.1 KiB
YAML
36 lines
1.1 KiB
YAML
title: Logon Scripts (UserInitMprLogonScript)
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id: 0a98a10c-685d-4ab0-bddc-b6bdd1d48458
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status: test
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description: Detects creation or execution of UserInitMprLogonScript persistence method
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references:
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- https://cocomelonc.github.io/persistence/2022/12/09/malware-pers-20.html
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author: Tom Ueltschi (@c_APT_ure), Tim Shelton
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date: 2019/01/12
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modified: 2023/01/31
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tags:
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- attack.t1037.001
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- attack.persistence
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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_cli:
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CommandLine|contains: 'UserInitMprLogonScript'
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selection_parent:
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ParentImage|endswith: '\userinit.exe'
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filter_parent:
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- CommandLine|contains:
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- 'netlogon*.bat'
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- 'UsrLogon.cmd'
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- 'C:\WINDOWS\Explorer.EXE'
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- CommandLine:
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- 'PowerShell.exe'
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- Image|endswith:
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- '\explorer.exe'
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- '\proquota.exe'
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- '\Citrix\System32\icast.exe'
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condition: selection_cli or (selection_parent and not filter_parent)
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falsepositives:
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- Exclude legitimate logon scripts
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level: high
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