
title: Root Certificate Installed
author: oscd.community, @redcanary, Zach Stanford @svch0st
date: 2020/10/10
description: Adversaries may install a root certificate on a compromised system to
  avoid warnings when connecting to adversary controlled web servers.
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_2:
    CommandLine: '*root*'
  SELECTION_3:
    Image: '*\certutil.exe'
  SELECTION_4:
    CommandLine: '*-addstore*'
  SELECTION_5:
    Image: '*\CertMgr.exe'
  SELECTION_6:
    CommandLine: '*/add*'
  condition: (SELECTION_1 and SELECTION_2 and ((SELECTION_3 and SELECTION_4) or (SELECTION_5
    and SELECTION_6)))
falsepositives:
- Help Desk or IT may need to manually add a corporate Root CA on occasion. Need to
  test if GPO push doesn't trigger FP
id: 46591fae-7a4c-46ea-aec3-dff5e6d785dc
level: medium
logsource:
  category: process_creation
  product: windows
modified: 2021/09/21
references:
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1553.004/T1553.004.md
related:
- id: 42821614-9264-4761-acfc-5772c3286f76
  type: derived
status: experimental
tags:
- attack.defense_evasion
- attack.t1553.004
ruletype: SIGMA
