SigmaHQ/rules/windows/registry_event/sysmon_reg_office_security.yml

title: Office Security Settings Changed
id: a166f74e-bf44-409d-b9ba-ea4b2dd8b3cd
status: experimental
description: Detects registry changes to Office macro settings
author: Trent Liffick (@tliffick)
date: 2020/05/22
modified: 2020/07/01
references:
    - Internal Research
tags:
    - attack.defense_evasion
    - attack.t1112
logsource:
    category: registry_event
    product: windows
detection:
    sec_settings:
        TargetObject|endswith:
            - '*\Security\Trusted Documents\TrustRecords'
            - '*\Security\AccessVBOM'
            - '*\Security\VBAWarnings'
        EventType:
            - SetValue
            - DeleteValue
            - CreateValue
    condition: sec_settings
falsepositives:
    - Valid Macros and/or internal documents
level: high
added rule for zLoader & Office detects changes to Office macro settings & ZLoader malware 2020-06-03 21:40:05 +00:00			`title: Office Security Settings Changed`
			`id: a166f74e-bf44-409d-b9ba-ea4b2dd8b3cd`
			`status: experimental`
			`description: Detects registry changes to Office macro settings`
			`author: Trent Liffick (@tliffick)`
			`date: 2020/05/22`
refactor: sysmon rule cleanup > generlization 2020-07-01 08:58:39 +00:00			`modified: 2020/07/01`
added rule for zLoader & Office detects changes to Office macro settings & ZLoader malware 2020-06-03 21:40:05 +00:00			`references:`
refactor: sysmon rule cleanup > generlization 2020-07-01 08:58:39 +00:00			`- Internal Research`
added rule for zLoader & Office detects changes to Office macro settings & ZLoader malware 2020-06-03 21:40:05 +00:00			`tags:`
			`- attack.defense_evasion`
			`- attack.t1112`
			`logsource:`
refactor: sysmon rule cleanup > generlization 2020-07-01 08:58:39 +00:00			`category: registry_event`
			`product: windows`
added rule for zLoader & Office detects changes to Office macro settings & ZLoader malware 2020-06-03 21:40:05 +00:00			`detection:`
			`sec_settings:`
refactor: sysmon rule cleanup > generlization 2020-07-01 08:58:39 +00:00			`TargetObject\|endswith:`
added rule for zLoader & Office detects changes to Office macro settings & ZLoader malware 2020-06-03 21:40:05 +00:00			`- '*\Security\Trusted Documents\TrustRecords'`
			`- '*\Security\AccessVBOM'`
			`- '*\Security\VBAWarnings'`
refactor: sysmon rule cleanup > generlization 2020-07-01 08:58:39 +00:00			`EventType:`
Cosmetics 2020-06-10 14:35:14 +00:00			`- SetValue`
			`- DeleteValue`
			`- CreateValue`
added rule for zLoader & Office detects changes to Office macro settings & ZLoader malware 2020-06-03 21:40:05 +00:00			`condition: sec_settings`
refactor: sysmon rule cleanup > generlization 2020-07-01 08:58:39 +00:00			`falsepositives:`
			`- Valid Macros and/or internal documents`
			`level: high`