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msimn.exe keeps surfacing


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5 replies to this topic

#1 Martel

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Posted 20 December 2008 - 01:51 PM

Windows XP MCE
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CA Security Suite

Outlook Express quits responding and I check taskmanager and find msimn.exe running at the top of the CPU food chain.

Checking startup I see it is undesirable.

Wondering how to rid myself of this.

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#2 garmanma

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Posted 20 December 2008 - 03:07 PM

Please download Malwarebytes Anti-Malware and save it to your desktop.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
  • MBAM will automatically start and you will be asked to update the program before performing a scan. If an update is found, the program will automatically update itself. Press the OK button to close that box and continue. If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install.
  • On the Scanner tab:
    • Make sure the "Perform Quick Scan" option is selected.
    • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
  • Back at the main Scanner screen, click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note: If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes, they may alert you after scanning with MBAM. Please permit the program to allow the changes.
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#3 Martel

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Posted 20 December 2008 - 09:00 PM

garmanma,

Thanks for the reply.

Followed the instructions to a T.

Ran two scans ..nothing detected.

The msimn.exe file seems only to come on when I open Outlook Express

both logs below
--
Malwarebytes' Anti-Malware 1.31
Database version: 1526
Windows 5.1.2600 Service Pack 3

12/20/2008 8:03:18 PM
mbam-log-2008-12-20 (20-03-18).txt

Scan type: Full Scan (C:\|)
Objects scanned: 140034
Time elapsed: 1 hour(s), 14 minute(s), 3 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)



--

Second Log


--

Malwarebytes' Anti-Malware 1.31
Database version: 1526
Windows 5.1.2600 Service Pack 3

12/20/2008 8:57:59 PM
mbam-log-2008-12-20 (20-57-59).txt

Scan type: Quick Scan
Objects scanned: 41858
Time elapsed: 6 minute(s), 41 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

Edited by Martel, 20 December 2008 - 09:07 PM.


#4 quietman7

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Posted 20 December 2008 - 11:19 PM

Just because msimn.exe is showing in Task Manager does not necessarily mean its running as a startup. msimn.exe can also be the executable for Microsoft Outlook Express.

Determining whether a file is malware or a legitimate process sometimes depends on the location (path) it is running from. One of the ways that malware tries to hide is to give itself the same name as a critical system file. However, it then places itself in a different location on your computer. A file's properties may give a clue to identifying it. Right-click on the file, Properties and examine the General and Version tabs.

You can download and use Process Explorer, AnVir TaskManager Free or System Explorer to investigate all running processes and gather additional information to identify and resolve problems. These tools will show the process CPU usage, a description and its path location. If you right-click on the file in question and select properties, you will see more details about the file.

If you cannot find any information, the file has a legitimate name but is not located where it is supposed to be, or you want a second opinion, submit it to jotti's virusscan or virustotal.com. In the "File to upload & scan" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.
-- Then post back with the results of the file analysis.
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#5 Martel

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Posted 21 December 2008 - 10:23 AM

quietman7,

Thanks for the reply...

Using Process Explorer I see that the files location is C:\Program Files\Outlook Express\msimn.exe

Seems legitimate, and it only appears when OE6 is started.

And it terminates when OE6 is terminated.

Also terminating the running process causes OE6 to end

Thank You for the help.

I will continue to analyze the properties of other running processes.

#6 quietman7

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Posted 21 December 2008 - 11:34 AM

You're welcome.
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