schtasks.exe - how to make System as task creator?

Question

0.00/5 (No votes)

See more:

Hello,

When using schtasks.exe, I can easily change "Run as" to be System (NT AUTHORITY\SYSTEM), with /RU option.

I want to see task creator (under creator in Scheduled Tasks folder) to be System as well (now I see there my username).

How can I do it?
(If I use AT.exe the creator is autimatically System)

Thanks

Posted 28-Mar-11 4:16am

user_code

Updated 28-Mar-11 6:41am

Dalek Dave

v2

Add a Solution

Comments

Dalek Dave 28-Mar-11 12:42pm

Edited for Grammar and Readability.

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dave Kreskowiak · Answer 1 · 2011-03-28T05:25:00

Solution 1

You can't. You cannot give a process more permissions that you already have.

If the process needs to run as System, a process already running as System has to launch it itself.

Posted 28-Mar-11 5:25am

Dave Kreskowiak

Comments

user_code 28-Mar-11 11:30am

Are you sure? because at.exe creator is System.

Dave Kreskowiak 28-Mar-11 18:55pm

Yes, I'm sure. AT is run by the user, not the system. The Task Scheduler service runs under svchost under Local System. Any tasks launched by the Task Scheduler have the option of running as System.

The exact same thing applies to SchTasks. SchTasks tells the Task Scheduler service which account to use. A normal user cannot tell TS to use the System account. The Task Scheduler launches the command and can launch it as System because the Task Scheduler service runs under the System account.

The same limitation of users not being able to grant priv's above themselves applied to any code running on the system. Code cannot grant permissions to anything above the account the code is running under.

Alan N · Answer 2 · 2011-03-28T08:25:00

Solution 2

Hello again,
What happens when you use the command line option /RU "SYSTEM". From my reading of the documentation[^] that should solve the problem, assuming you run schtasks from an administrator account.

SCHTASKS /Create /SC hourly /TN Task1 /TR "notepad.exe" /RU "SYSTEM"

Alan.

Posted 28-Mar-11 8:25am

Alan N