Detection rules › Sigma
Windows Registry Trust Record Modification
Alerts on trust record modification within the registry, indicating usage of macros
Known false positives
- This will alert on legitimate macro usage as well, additional tuning is required
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access |
Telemetry coverage
Rule body
title: Windows Registry Trust Record Modification
id: 295a59c1-7b79-4b47-a930-df12c15fc9c2
related:
- id: a166f74e-bf44-409d-b9ba-ea4b2dd8b3cd
type: similar
status: test
description: Alerts on trust record modification within the registry, indicating usage of macros
references:
- https://outflank.nl/blog/2018/01/16/hunting-for-evil-detect-macros-being-executed/
- http://az4n6.blogspot.com/2016/02/more-on-trust-records-macros-and.html
- https://twitter.com/inversecos/status/1494174785621819397
author: Antonlovesdnb, Trent Liffick (@tliffick)
date: 2020-02-19
modified: 2023-06-21
tags:
- attack.initial-access
- attack.t1566.001
logsource:
category: registry_event
product: windows
detection:
selection:
TargetObject|contains: '\Security\Trusted Documents\TrustRecords'
condition: selection
falsepositives:
- This will alert on legitimate macro usage as well, additional tuning is required
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
TargetObject|contains: '\Security\Trusted Documents\TrustRecords'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
TargetObject | match |
| field:"TargetObject" kind:match value:"\Security\Trusted Documents\TrustRecords" |