Detectionhightest

Root Certificate Installed From Susp Locations

Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Nasreddine Bencherchali (Nextron Systems)Created Fri Sep 09Updated Mon Jan 165f6a601c-2ecb-498b-9c33-660362323afawindows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

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