title: Root Certificate Installed From Susp Locations
id: 5f6a601c-2ecb-498b-9c33-660362323afa
status: test
description: Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.
references:
- https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/
- https://learn.microsoft.com/en-us/powershell/module/pki/import-certificate?view=windowsserver2022-ps
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-09-09
modified: 2023-01-16
tags:
- attack.defense-impairment
- attack.t1553.004
logsource:
category: process_creation
product: windows
detection:
selection:
CommandLine|contains|all:
- 'Import-Certificate'
- ' -FilePath '
- 'Cert:\LocalMachine\Root'
CommandLine|contains:
- '\AppData\Local\Temp\'
- ':\Windows\TEMP\'
- '\Desktop\'
- '\Downloads\'
- '\Perflogs\'
- ':\Users\Public\'
condition: selection
falsepositives:
- Unlikely
level: high