Replace.exe Usage — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2022-03-06 / 2024-03-13.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 23e211777c71b36f4a91b61e4844ea5422ca57564722a43527bf5c53567d05a5

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: Replace.exe Usage
id: 9292293b-8496-4715-9db6-37028dcda4b3
status: test
description: Detects the use of Replace.exe which can be used to replace file with another file
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Replace/
    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/replace
author: frack113
date: 2022-03-06
modified: 2024-03-13
tags:
    - attack.command-and-control
    - attack.t1105
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\replace.exe'
    argument:
        CommandLine|contains|windash: '-a'
    condition: selection and argument
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://lolbas-project.github.io/lolbas/Binaries/Replace/
• https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/replace