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You can use Add-localgroupmember in powershell<br />
<br />
<a href="https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.localaccounts/add-localgroupmember?view=powershell-5.1" rel="ugc">https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.localaccounts/add-localgroupmember?view=powershell-5.1</a>
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It needs to be done remotely..<br />
I have this so far <br />
net user /add account password<br />
net localgroup administrators account /add
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WellingtonIS

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I would stay away from psexec since Wannacry uses it, ultimately I do have a question, why can't you use GPO? &nbsp;You say it's blocked but you must have other GPO's in your company.
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Long story... But basically I'm sneaking in a backdoor
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Microsoft blocked it via gpo as it was a security hole that they plugged. <br />
<br />
About malicious software using psexec so stay away from it. Malicious software uses pdf scripting, office documents using vba macro's, powershell, vbscript, batch files, Bank Robbers leave the scene of the crime using a car so no one should use a car? You can kill someone with a hammer, so carpenters should not use hammers? <br />
A legitimate admin should not need a backdoor so this would have to be approved by company policy
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@WellingtonIS:<br />
<br />
Using psexec requires open ports. This is not recommended. Using a script like your two lines is possible, but will leave the administrator password the same anywhere - that should not be done, it's very dangerous!<br />
<br />
I would offer consultancy if you told me what you are using the account for (detailed scenarios, please) and I have also an article for you about safe support user setups: <a href="https://www.experts-exchange.com/articles/18180/A-concept-for-safe-user-support.html" rel="ugc">https://www.experts-exchange.com/articles/18180/A-concept-for-safe-user-support.html</a>
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<div class="content wysiwyg-content">
I need a script or command to create a local user and add it to the local administrator's group on remote machines. &nbsp;Can this be done? &nbsp;I can not do this via GPO because it's blocked so I need a back door.<br />
<br />
I have this so far net user /add account password<br />
net localgroup administrators account /add
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I need a script or command to create a local user and add it to the local administrator's group on remote machines.  Can this be done?  I can not do this via GPO because it's blocked so I need a back door.

I have this so far net user /add account password
net localgroup administrators account /add

Need to create and add a user then add to the local administrators account

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