Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
34 lines
1.4 KiB
YAML
34 lines
1.4 KiB
YAML
title: Unauthorized System Time Modification
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id: faa031b5-21ed-4e02-8881-2591f98d82ed
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status: test
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description: Detect scenarios where a potentially unauthorized application or user is modifying the system time.
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references:
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- Private Cuckoo Sandbox (from many years ago, no longer have hash, NDA as well)
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- Live environment caused by malware
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- https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4616
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author: '@neu5ron'
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date: 2019-02-05
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modified: 2022-08-03
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tags:
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- attack.defense-evasion
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- attack.t1070.006
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logsource:
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product: windows
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service: security
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definition: 'Requirements: Audit Policy : System > Audit Security State Change, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\System\Audit Security State Change'
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detection:
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selection:
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EventID: 4616
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filter1:
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ProcessName:
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- 'C:\Program Files\VMware\VMware Tools\vmtoolsd.exe'
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- 'C:\Windows\System32\VBoxService.exe'
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- 'C:\Windows\System32\oobe\msoobe.exe'
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filter2:
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ProcessName: 'C:\Windows\System32\svchost.exe'
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SubjectUserSid: 'S-1-5-19'
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condition: selection and not 1 of filter*
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falsepositives:
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- HyperV or other virtualization technologies with binary not listed in filter portion of detection
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level: low
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