Scheduled Task Executed From A Suspicious Location — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2022-12-05 / 2023-02-07.

{
  "product": "windows",
  "service": "taskscheduler",
  "definition": "Requirements: The \"Microsoft-Windows-TaskScheduler/Operational\" is disabled by default and needs to be enabled in order for this detection to trigger"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: eb34bbe48a99831f5dd950436de7a29df7a264323c0e2bbb1ecd0edfee749fc2

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: Scheduled Task Executed From A Suspicious Location
id: 424273ea-7cf8-43a6-b712-375f925e481f
status: test
description: Detects the execution of Scheduled Tasks where the Program being run is located in a suspicious location or it's an unusale program to be run from a Scheduled Task
references:
    - Internal Research
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-12-05
modified: 2023-02-07
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.persistence
    - attack.t1053.005
logsource:
    product: windows
    service: taskscheduler
    definition: 'Requirements: The "Microsoft-Windows-TaskScheduler/Operational" is disabled by default and needs to be enabled in order for this detection to trigger'
detection:
    selection:
        EventID: 129 # Created Task Process
        Path|contains:
            - 'C:\Windows\Temp\'
            - '\AppData\Local\Temp\'
            - '\Desktop\'
            - '\Downloads\'
            - '\Users\Public\'
            - 'C:\Temp\'
    # If you experience FP. Uncomment the filter below and add the specific TaskName with the Program to it
    # filter:
    #     TaskName: '\Exact\Task\Name'
    #     Path: 'Exact\Path'
    condition: selection
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• Internal Research (source note; no public URL supplied)