60 lines
1.7 KiB
YAML
60 lines
1.7 KiB
YAML
title: Reg Disable Security Service
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author: Florian Roth, John Lambert (idea)
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date: 2021/07/14
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description: Detects a suspicious reg.exe invocation that looks as if it would disable
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an important security service
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_10:
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CommandLine: '*\WdBoot *'
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SELECTION_11:
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CommandLine: '*\WdNisDrv*'
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SELECTION_12:
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CommandLine: '*\WdNisSvc*'
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SELECTION_13:
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CommandLine: '*\wscsvc *'
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SELECTION_14:
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CommandLine: '*\SecurityHealthService*'
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SELECTION_15:
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CommandLine: '*\wuauserv*'
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SELECTION_16:
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CommandLine: '*\UsoSvc *'
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SELECTION_2:
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CommandLine: '*reg*'
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SELECTION_3:
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CommandLine: '*add*'
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SELECTION_4:
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CommandLine: '* /d 4*'
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SELECTION_5:
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CommandLine: '* /v Start*'
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SELECTION_6:
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CommandLine: '*\Sense *'
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SELECTION_7:
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CommandLine: '*\WinDefend*'
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SELECTION_8:
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CommandLine: '*\MsMpSvc*'
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SELECTION_9:
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CommandLine: '*\NisSrv*'
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condition: (SELECTION_1 and SELECTION_2 and SELECTION_3 and SELECTION_4 and SELECTION_5
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and (SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9 or SELECTION_10
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or SELECTION_11 or SELECTION_12 or SELECTION_13 or SELECTION_14 or SELECTION_15
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or SELECTION_16))
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falsepositives:
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- Unknown
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- Other security solution installers
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id: 5e95028c-5229-4214-afae-d653d573d0ec
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level: high
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logsource:
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category: process_creation
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product: windows
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references:
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- https://twitter.com/JohnLaTwC/status/1415295021041979392
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.t1562.001
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yml_filename: win_susp_reg_disable_sec_services.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation
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