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sigmahighHunting
Outlook EnableUnsafeClientMailRules Setting Enabled
Detects an attacker trying to enable the outlook security setting "EnableUnsafeClientMailRules" which allows outlook to run applications or execute macros
Detection Query
selection:
CommandLine|contains: \Outlook\Security\EnableUnsafeClientMailRules
condition: selection
Author
Markus Neis, Nasreddine Bencherchali (Nextron Systems)
Created
2018-12-27
Data Sources
windowsProcess Creation Events
Platforms
windows
References
- https://www.fireeye.com/blog/threat-research/2018/12/overruled-containing-a-potentially-destructive-adversary.html
- https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=44
- https://support.microsoft.com/en-us/topic/how-to-control-the-rule-actions-to-start-an-application-or-run-a-macro-in-outlook-2016-and-outlook-2013-e4964b72-173c-959d-5d7b-ead562979048
Tags
attack.executionattack.defense-evasionattack.t1059attack.t1202
Raw Content
title: Outlook EnableUnsafeClientMailRules Setting Enabled
id: 55f0a3a1-846e-40eb-8273-677371b8d912
related:
- id: 6763c6c8-bd01-4687-bc8d-4fa52cf8ba08 # Registry variation
type: similar
status: test
description: Detects an attacker trying to enable the outlook security setting "EnableUnsafeClientMailRules" which allows outlook to run applications or execute macros
references:
- https://www.fireeye.com/blog/threat-research/2018/12/overruled-containing-a-potentially-destructive-adversary.html
- https://speakerdeck.com/heirhabarov/hunting-for-persistence-via-microsoft-exchange-server-or-outlook?slide=44
- https://support.microsoft.com/en-us/topic/how-to-control-the-rule-actions-to-start-an-application-or-run-a-macro-in-outlook-2016-and-outlook-2013-e4964b72-173c-959d-5d7b-ead562979048
author: Markus Neis, Nasreddine Bencherchali (Nextron Systems)
date: 2018-12-27
modified: 2023-02-09
tags:
- attack.execution
- attack.defense-evasion
- attack.t1059
- attack.t1202
logsource:
category: process_creation
product: windows
detection:
selection:
CommandLine|contains: '\Outlook\Security\EnableUnsafeClientMailRules'
condition: selection
falsepositives:
- Unknown
level: high