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rarextloader.exe - is this a harmful process?


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#1 Flogger23m

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Posted 24 June 2011 - 01:56 PM

Today I noticed that whenever I right click on a folder, I get the following process show up in the Task Manager:

rarextloader.exe

As soon as I stop right clicking the folder the process goes away.

I did a search in the Windows folder and found the following located here C:\Windows\Prefetch :

RAREXTLOADER.EXE-4B76CB3C.pk

I do have Winrar and 7zip installed. I have never noticed these processes running before, but they may have been running and I might not not noticed until now. I just want to be sure it is nothing harmful.

My OS is Vista 64bit Home Premium SP2. I am currently scanning with the most updated version of Malwarebytes. But if this is a known infection and Mbam comes out clean, what other programs should I run? I have Avira Free, Spybot, and Eset free scanner which I can also run.

Edited by Flogger23m, 24 June 2011 - 02:05 PM.


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#2 Broni

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Posted 24 June 2011 - 02:46 PM

Most likely, it's WinRAR process.
I have rarextloader.exe file in C:\Programs\WinRAR folder.

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#3 boopme

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Posted 24 June 2011 - 02:57 PM

This a potential issue as it does not appear to be in the proper location for Winrar.

RarExtLoader.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of Windows Temp folder. The file size on Windows XP is 44,032 bytes.

Across all ThreatExpert reports, the file "rarextloader.exe" has sometimes been a threat.
http://www.threatexpert.com/files/rarextloader.exe.html

Post the MBAM log and do an online scan.

I'd like us to scan your machine with ESET OnlineScan
  • Hold down Control and click on the following link to open ESET OnlineScan in a new window.
    ESET OnlineScan
  • Click the Posted Image button.
  • For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)
    • Click on Posted Image to download the ESET Smart Installer. Save it to your desktop.
    • Double click on the Posted Image icon on your desktop.
  • Check Posted Image
  • Click the Posted Image button.
  • Accept any security warnings from your browser.
  • Under scan settings, check Posted Image and check Remove found threats
  • Click Advanced settings and select the following:
    • Scan potentially unwanted applications
    • Scan for potentially unsafe applications
    • Enable Anti-Stealth technology
  • ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
  • When the scan completes, push Posted Image
  • Push Posted Image, and save the file to your desktop using a unique name, such as ESETScan. Include

    the contents of this report in your next reply.
  • Push the Posted Image button.
  • Push Posted Image


NOTE: In some instances if no malware is found there will be no log produced.
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#4 Flogger23m

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Posted 24 June 2011 - 03:15 PM

Thanks for the reply. Shall I run a full or quick system scan with Mbam? I started a full scan so far with no issues, but I stopped the scan when it was done with the X86 Program Files folder and am scanning the Windows folder. Should I post the log when this scan is done, or should I start the scan over?

And can I run Eset from my desktop (I already have the .exe)?

#5 boopme

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Posted 24 June 2011 - 03:17 PM

Quick should suffice and "Eset from my desktop + yes
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#6 Flogger23m

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Posted 24 June 2011 - 03:21 PM

Ok, I will let Mbam finish scanning the Windows folder and then run a quick scan as well as Eset and post the logs when they are done. Thanks for the help, I really appreciate it.

#7 boopme

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Posted 24 June 2011 - 03:27 PM

No problem,it;s just that there is potential for a Virut infection and we want to be sure.
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#8 Flogger23m

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Posted 24 June 2011 - 03:42 PM

I canceled the full scan, no issues so far. The quick scan results are found below. Note that I am in Safe Mode with Networking.




Malwarebytes' Anti-Malware 1.51.0.1200
www.malwarebytes.org

Database version: 6940

Windows 6.0.6002 Service Pack 2 (Safe Mode)
Internet Explorer 7.0.6002.18005

06/24/2011 1:40:58 PM
mbam-log-2011-06-24 (13-40-58).txt

Scan type: Quick scan
Objects scanned: 167175
Time elapsed: 1 minute(s), 53 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)



I am scanning with Eset as of now, but it will take a while. I'll post the results when I am done.

Edited by Flogger23m, 24 June 2011 - 03:45 PM.


#9 boopme

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Posted 24 June 2011 - 03:54 PM

Ok, I look back later...looks good so far.
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#10 Flogger23m

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Posted 24 June 2011 - 04:17 PM

I also scanned with Avira (Windows and Users folders, which is where viruses typically seem to hide) and it came out clean. Just checked another PC (Win 7 64bit and Winrar) and it displays the same .exe when right clicking.

Still scanning with ESET, this will take a while. I'll post the results when they come in.

When booting into Normal Mode I will run Mbam quick scan again.

Edited by Flogger23m, 24 June 2011 - 04:18 PM.


#11 Flogger23m

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Posted 24 June 2011 - 05:02 PM

Eset found the following:

a variant of Win32/GameHack.F application

Win32/OpenCandy application



Here are the results:

C:\Program Files (x86)\THQ\S.T.A.L.K.E.R. - Shadow of Chernobyl\documentation\#soc_trainer_v.1.0005#\Stalker Trainer 1.0005.exe a variant of Win32/GameHack.F application cleaned by deleting - quarantined
C:\Users\Simarin\Downloads\DriverSweeper_3.0.0.exe Win32/OpenCandy application deleted - quarantined




I'm not sure with STALKER (legal CD bought) and Driver Sweeper where infected...

Edited by Flogger23m, 24 June 2011 - 06:02 PM.


#12 boopme

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Posted 24 June 2011 - 06:30 PM

Ok well there is no Virut and we cleaned a few others..Good to go.

Now you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:
  • Go to Start > Programs > Accessories > System Tools and click "System Restore".
  • Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.
  • Then use Disk Cleanup to remove all but the most recently created Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  • Click the "More Options" tab, then click the "Clean up" button under System Restore.
  • Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  • Click Yes, then click Ok.
  • Click Yes again when prompted with "Are you sure you want to perform these actions?"
  • Disk Cleanup will remove the files and close automatically.
Vista Users can refer to these links: Create a New Restore Point and Disk Cleanup.

Tips to protect yourself against malware and reduce the potential for re-infection:Avoid gaming sites, pirated software, cracking tools, keygens, and peer-to-peer (P2P) file sharing programs. They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Many malicious worms and Trojans spread across P2P file sharing networks, gaming and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and malicious Flash ads that install viruses, Trojans and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications. Read P2P Software User Advisories and Risks of File-Sharing Technology.

Keeping Autorun enabled on USB and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. To learn more about this risk, please read:
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#13 Flogger23m

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Posted 24 June 2011 - 09:29 PM

I had system restore disabled for months. Considering this, do I still need to create a new restore point?

#14 Flogger23m

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Posted 24 June 2011 - 11:57 PM

Also, what exactly is SBSD Security Center Service? It is set to run during Windows start up from MSconfig. It has been there for a long time, but I am just wondering what it is. If I don't need it I would rather disable it.

#15 boopme

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Posted 25 June 2011 - 09:51 AM

You should make one so that you have one... You can clean up the extra space by making a new one every few months.

Related to SpyBot_and_Destroy Security Center Service integration with Vista Windows Security Center. Microsoft ships Windows Defender with Vista, however, Spybot-S&D can now easily integrate into the Vista Security Center; which will then monitor if Spybot-S&D is up-to-date and whether the permanent protection (TeaTimer) is running or not.This update will only show on Vista systems, since previous Windows versions do not offer anti malware integration into WSC.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook




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