MSI Installation From Web — Sigma Rule

Rule metadata and linked tags

Author: Stamatis Chatzimangou. Source status: test; severity: medium. Source dates: 2022-10-23 / not supplied.

{
  "product": "windows",
  "service": "application"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: beda99b04906d8049417b1b2164fe1616580b64a531c25012f43f35f2338d063

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: MSI Installation From Web
id: 5594e67a-7f92-4a04-b65d-1a42fd824a60
status: test
description: Detects installation of a remote msi file from web.
references:
    - https://twitter.com/_st0pp3r_/status/1583922009842802689
author: Stamatis Chatzimangou
date: 2022-10-23
tags:
    - attack.stealth
    - attack.t1218
    - attack.t1218.007
logsource:
    product: windows
    service: application
    # warning: The 'data' field used in the detection section is the container for the event data as a whole. You may have to adapt the rule for your backend accordingly
detection:
    selection:
        Provider_Name: 'MsiInstaller'
        EventID:
            - 1040
            - 1042
        Data|contains: '://'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://twitter.com/_st0pp3r_/status/1583922009842802689