Detection rules › Sigma
Suspicious Scheduled Task Creation Involving Temp Folder
Detects the creation of scheduled tasks that involves a temporary folder and runs only once
Known false positives
- Administrative activity
- Software installation
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Persistence | |
| Privilege Escalation |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: Suspicious Scheduled Task Creation Involving Temp Folder
id: 39019a4e-317f-4ce3-ae63-309a8c6b53c5
status: test
description: Detects the creation of scheduled tasks that involves a temporary folder and runs only once
references:
- https://discuss.elastic.co/t/detection-and-response-for-hafnium-activity/266289/3
author: Florian Roth (Nextron Systems)
date: 2021-03-11
modified: 2022-10-09
tags:
- attack.privilege-escalation
- attack.execution
- attack.persistence
- attack.t1053.005
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\schtasks.exe'
CommandLine|contains|all:
- ' /create '
- ' /sc once '
- '\Temp\'
condition: selection
falsepositives:
- Administrative activity
- Software installation
level: high
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '\schtasks.exe'
CommandLine|contains|all:
- ' /create '
- ' /sc once '
- '\Temp\'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |
Image | ends_with |
| field:"Image" kind:ends_with value:"\schtasks.exe" |