Suspicious Execution of InfDefaultInstall.exe .inf (via process_creation)

title: Suspicious Execution of InfDefaultInstall.exe .inf (via process_creation)
id: 3430c8ff-2372-5533-b2b9-38176ca2a563
status: stable
description: This rule detects SCT script using scrobj.dll from a command in entered into a specially prepared INF file.
references:
    - https://attack.mitre.org/techniques/T1218/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md#atomic-test-4---infdefaultinstallexe-inf-execution
    - https://lolbas-project.github.io/lolbas/Binaries/Infdefaultinstall/
author: Huntrule Team
date: 2026-02-08
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'InfDefaultInstall.exe '
            - '.inf'
    condition: selection
falsepositives:
    - Unknown
level: medium