IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
MS Office Macro Security Registry Modifications
editMS Office Macro Security Registry Modifications
editMicrosoft Office Products offers options for users and developers to control the security settings for running and using Macros. Adversaries may abuse these security settings to modify the default behavior of the Office Application to trust future macros and/or disable security warnings, which could increase their chances of establishing persistence.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-windows.*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Defense Evasion
Version: 1
Added (Elastic Stack release): 8.1.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editregistry where event.type == "change" and registry.path : (
"HKU\\S-1-5-21-*\\SOFTWARE\\Microsoft\\Office\\*\\Security\\AccessVBOM
", "HKU\\S-1-5-21-*\\SOFTWARE\\Microsoft\\Office\\*\\Security\
\VbaWarnings" ) and registry.data.strings == "0x00000001"
and process.name : ("cscript.exe", "wscript.exe", "mshta.exe",
"mshta.exe", "winword.exe", "excel.exe")
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Modify Registry
- ID: T1112
- Reference URL: https://attack.mitre.org/techniques/T1112/
-
Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/
-
Technique:
- Name: User Execution
- ID: T1204
- Reference URL: https://attack.mitre.org/techniques/T1204/