File Download And Execution Via IEExec.EXE — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2022-05-16 / 2023-11-09.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: dffa13ab8a736a1d59bc16e9f9a884b4ea41d3b39ef710705204ab2240f64d14

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: File Download And Execution Via IEExec.EXE
id: 9801abb8-e297-4dbf-9fbd-57dde0e830ad
status: test
description: Detects execution of the IEExec utility to download and execute files
references:
    - https://lolbas-project.github.io/lolbas/Binaries/Ieexec/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-05-16
modified: 2023-11-09
tags:
    - attack.command-and-control
    - attack.t1105
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\IEExec.exe'
        - OriginalFileName: 'IEExec.exe'
    selection_cli:
        CommandLine|contains:
            - 'http://'
            - 'https://'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://lolbas-project.github.io/lolbas/Binaries/Ieexec/