Suspicious Msiexec Quiet Install From Remote Location (via process_creation)

title: Suspicious Msiexec Quiet Install From Remote Location (via process_creation)
id: 7b79cb7b-6ed0-59e9-8082-c76793745400
status: stable
description: This rule detects use of Msiexec.exe to install packages hosted remotely quietly
references:
    - https://attack.mitre.org/techniques/T1218/007/
    - https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/
author: Huntrule Team
date: 2026-07-08
tags:
    - attack.stealth
    - attack.t1218.007
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\msiexec.exe'
        - OriginalFileName: 'msiexec.exe'
    selection_cli:
        CommandLine|contains|windash:
            - '-i'
            - '-package'
            - '-a'
            - '-j'
    selection_quiet:
        CommandLine|contains|windash: '-q'
    selection_remote:
        CommandLine|contains:
            - 'http'
            - '\\\\'
    filter_optional_openoffice:
        CommandLine|contains|all:
            - '\AppData\Local\Temp\OpenOffice'
            - 'Installation Files\openoffice'
    condition: all of selection_* and not 1 of filter_optional_*
falsepositives:
    - Unknown
level: medium