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Explorer.exe infected...?

Last post 06-04-2009 8:37 PM by Blue1978. 6 replies.
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  • 06-03-2009 6:22 AM

    Explorer.exe infected...?

    Hello,

    It seems I have a bit of malware on my PC (Windows XP, SP3, IE8) .  In the blink logs, I see things like: 

     Severity: High
     Description: Blink stopped an unprivileged WriteProcessMemory call. If you believe this application is not malicious, you can add it to a list of approved applications in the Config\apiex.ini file using this format 'FilePath;[Optional MD5];WriteProcessMemory;0'
     Alert: Yes
     Caller PID: 2044
     Caller process: C:\WINDOWS\Explorer.EXE

     But, I ran a full scan of the system, and it turned up nothing.  I also had it scan that particular file, and it said there is no threat.

    I am assuming that I am infected with something, and that Blink is missing it...?

    Using Blink Professional 4.3.1, Rule version 1512.  Antivirus Version 1.0.665.  Vulnerability Scanner version 5.10.11. Audits version 2061

  • 06-03-2009 8:49 AM In reply to

    Re: Explorer.exe infected...?

    Realized I was a bit out of date, so I updated.  Running a new scan using the latest.  Hope this helps...

    Blink Professional 4.3.2

    Rule version 1521. 

    Antivirus Version 1.0.694. 

    Vulnerability Scanner version 5.10.12.

    Audits version 2085

  • 06-03-2009 1:30 PM In reply to

    Re: Explorer.exe infected...?

         Are you still seeing the alert now when trying to use IE?  Either it was a false-positive (because of the way something was interacting with IE) or Blink did stop something from maliciously using IE's process to continue on with its own execution.  As far as running a scan on your system, since Blink terminated whatever was trying to use IE's process nothing else was able to execute because of this, so there is probably nothing wrong with your system at this point.  Whatever was trying to execute, was stopped in its tracks from doing so.

         By any chance do you know what you were doing at the time or where you were surfing to with IE when this alert popped up?  If your not happy and still would like more help, your are entitled to support (since your a Blink Professional user) from your portal at:

    https://www.eeye.com/clients/login.html?access=0&target=&rnd=090603.135215.765344.474

  • 06-04-2009 7:35 AM In reply to

    Re: Explorer.exe infected...?

     It looks like this happens when I first log into the system. 12 attempts were made (like the previous event posted), followed by this event:

    Event ID: BLINK-AFW-17
     Severity: Information
     Description: Traffic allowed in Passive mode
     Alert: No
     Protocol: IP
     Protocol: TCP
     Type: Server request
     Process Path: C:\WINDOWS\explorer.exe
     Process Name: explorer.exe
     Local Port: 30864
     Request: Allowed
     MD5: 12896823FB95BFB3DC9B46BCAEDC9923

    Seems like I have something in the system that is trying to do something.  Even if Blink is stopping it from succeeding, I would still like to remove it.

  • 06-04-2009 1:29 PM In reply to

    Re: Explorer.exe infected...?

         Have you tried using the tool ProcessExplorer to see what might be starting it?

         http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx

        You might not be able to run this tool in time upon logging into your system, but it it worth a try.  it has the ability to show you any new processes that are launched and what is directly launching them.  If you have not used ProcessExplorer before, you enable this feature by going to View at the top and then by making sure the "Show New Processes" function is enabled (this is not set by default).

    Maybe eEye can assist further with this, I would recommend submitting a ticket also in your portal and see if they know of any tools that can help you located what is causing this.

    Filed under:
  • 06-04-2009 6:24 PM In reply to

    • bpatten
    • Top 10 Contributor
    • Joined on 09-24-2007
    • Irvine, CA
    • Posts 125

    Re: Explorer.exe infected...?

    He's right. I would suggest starting with Process Explorer to see what DLL's Explorer.exe is using. Process Explorer will also show you what programs are being called from another. Sometimes you see DLL's related to 3rd party apps like Synaptics (usually found on a laptop with touchpad).

  • 06-04-2009 8:37 PM In reply to

    Re: Explorer.exe infected...?

     What if it is a third party application.  That means everytime he starts his system Blink will be choking on it until something is done about it.

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