MsiExec Web Install — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: medium. Source dates: 2018-02-09 / 2022-01-07.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 66ad4761f00dc4b1065d78853e46409e22ccab154c511730d25fc1d7382da547

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: MsiExec Web Install
id: f7b5f842-a6af-4da5-9e95-e32478f3cd2f
related:
    - id: 8150732a-0c9d-4a99-82b9-9efb9b90c40c
      type: similar
status: test
description: Detects suspicious msiexec process starts with web addresses as parameter
references:
    - https://blog.trendmicro.com/trendlabs-security-intelligence/attack-using-windows-installer-msiexec-exe-leads-lokibot/
author: Florian Roth (Nextron Systems)
date: 2018-02-09
modified: 2022-01-07
tags:
    - attack.stealth
    - attack.t1218.007
    - attack.command-and-control
    - attack.t1105
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - ' msiexec'
            - '://'
    condition: selection
falsepositives:
    - False positives depend on scripts and administrative tools used in the monitored environment
level: medium

Original YAML and metadata in JSON

False positives

• False positives depend on scripts and administrative tools used in the monitored environment

Source references

• https://blog.trendmicro.com/trendlabs-security-intelligence/attack-using-windows-installer-msiexec-exe-leads-lokibot/