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System.exe Virus


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#1 mrklean93

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Posted 12 November 2007 - 10:38 PM

Hello. I have recently found system.exe in my task list. I Googled it and I found that it is a virus.

I ran an Avast! scan and a Spybot scan. Neither found anything on it.

I tried searching my system for the system.exe file and it did not find anything either.

Does anyone know how I can remove it?


Thanks for any help.

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#2 buddy215

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Posted 13 November 2007 - 08:00 AM

You can submit the file to Jotti and they will scan it with multiple programs that will determine whether is legit or what malware is using it.
http://virusscan.jotti.org/

Super Antispyware removes a lot of the malware that uses that file name.
Install Super Antispyware free. Run it in safe mode. Allow it to quarantine whatever it finds.
http://www.superantispyware.com/

Please let us know the results of the scans.

After rereading your post, I suggest you unhide hidden files.
By default Windows hides certain files from being seen with Windows Explorer or My Computer. This is done to protect these files, which are usually system files, from accidentally being modified or deleted by the user. Unfortunately viruses, spyware, and hijackers often hide there files in this way making it hard to find them and then delete them.
Instructions for doing that are in the link below.
http://www.bleepingcomputer.com/tutorials/how-to-see-hidden-files-in-windows/

Edited by buddy215, 13 November 2007 - 11:27 AM.

“Every atom in your body came from a star that exploded and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics...you are all stardust.”Lawrence M. Krauss
A 1792 U.S. penny, designed in part by Thomas Jefferson and George Washington, reads “Liberty Parent of Science & Industry.”

#3 quietman7

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Posted 13 November 2007 - 11:11 AM

Scan results for system.exe should come back to show it is related to a backdoor Trojan. If that is the case, please know that Backdoor Trojans, IRCBots and Infostealers are very dangerous because they provide a means of accessing a computer system that bypasses security mechanisms and steal sensitive information like passwords, personal and financial data which they send back to the hacker. Remote attackers use backdoor Trojans as part of an exploit to to gain unauthorized access to a computer and take control of it without your knowledge. Read the Danger: Remote Access Trojans.

If your computer was used for online banking, has credit card information or other sensitive data on it, you should immediately disconnect your computer from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay and forums. You should consider them to be compromised. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breech.

Although the backdoor Trojan has been identified and may be removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume that because the backdoor Trojan has been removed the computer is now secure. Many experts in the security community believe that once infected with this type of malware, the best course of action is to reformat and reinstall the OS - "When should I re-format?".

Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful.

Please download SDFix by AndyManchesta and save it to your desktop.
alternate download
When using this tool, you must use the use the Administrator's account or an account with "Administrative rights"
  • Double click SDFix.exe and it will extract the files to %systemdrive%
  • (this is the drive that contains the Windows Directory, typically C:\SDFix).
  • DO NOT use it just yet.
Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Open the SDFix folder and double click RunThis.bat to start the script.
  • Type Y to begin the cleanup process.
  • It will remove any Trojan Services or Registry Entries found then prompt you to press any key to Reboot.
  • Press any Key and it will restart the PC.
  • When the PC restarts, the Fixtool will run again and complete the removal process then display Finished, press any key to end the script and load your desktop icons.
  • Once the desktop icons load the SDFix report will open on screen and also save into the SDFix folder as Report.txt.
  • Copy and paste the contents of the results file Report.txt in your next reply.
Note: If this error message is displayed when running SDFix:
  • The command prompt has been disabled by your administrator.
    Press any key to continue...
Please go to Start Menu > Run > and type (copy/paste) the following line:
%systemdrive%\SDFix\apps\swreg IMPORT %systemdrive%\SDFix\apps\Enable_Command_Prompt.reg
Press OK and then run SDFix again.

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#4 mrklean93

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Posted 13 November 2007 - 05:59 PM

SDFix: Version 1.114

Run by Administrator on Tue 11/13/2007 at 16:54

Microsoft Windows XP [Version 5.1.2600]

Running From: E:\sdfix\SDFix

Safe Mode:
Checking Services: 


Restoring Windows Registry Values
Restoring Windows Default Hosts File
Restoring Missing Security Center Service 

Rebooting...


Normal Mode:
Checking Files: 

No Trojan Files Found




Removing Temp Files...

ADS Check:

E:\WINDOWS
No streams found. 

E:\WINDOWS\system32
No streams found. 

E:\WINDOWS\system32\svchost.exe
No streams found.
 
E:\WINDOWS\system32\ntoskrnl.exe
No streams found.
 


								 Final Check:

catchme 0.3.1262.1 W2K/XP/Vista - rootkit/stealth malware detector by Gmer, http://www.gmer.net
Rootkit scan 2007-11-13 16:56:58
Windows 5.1.2600 Service Pack 2 NTFS

scanning hidden processes ...

scanning hidden services & system hive ...

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sptd\Cfg]
"s1"=dword:0e6df3bb
"s2"=dword:0c957bac
"h0"=dword:00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sptd\Cfg\19659239224E364682FA4BAF72C53EA4]
"p0"="E:\Program Files\DAEMON Tools\"
"h0"=dword:00000000
"khjeh"=hex:64,a4,20,00,14,91,8e,6f,3f,f3,9c,39,2c,b6,7d,86,1c,cc,f0,2b,39,..

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sptd\Cfg\19659239224E364682FA4BAF72C53EA4\00000001]
"a0"=hex:20,01,00,00,ad,c2,56,54,2a,dd,82,5b,35,34,96,df,3b,14,25,79,d3,..
"khjeh"=hex:f1,7e,f6,38,55,2e,58,79,51,dd,c5,ce,96,6f,96,da,18,44,6e,9e,d0,..

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sptd\Cfg\19659239224E364682FA4BAF72C53EA4\00000001\0Jf40]
"khjeh"=hex:a4,a1,bc,78,f6,21,45,1a,73,81,03,de,82,bd,00,4c,50,29,9d,d5,9c,..
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\sptd\Cfg\19659239224E364682FA4BAF72C53EA4]
"p0"="E:\Program Files\DAEMON Tools\"
"h0"=dword:00000000
"khjeh"=hex:64,a4,20,00,14,91,8e,6f,3f,f3,9c,39,2c,b6,7d,86,1c,cc,f0,2b,39,..

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\sptd\Cfg\19659239224E364682FA4BAF72C53EA4\00000001]
"a0"=hex:20,01,00,00,ad,c2,56,54,2a,dd,82,5b,35,34,96,df,3b,14,25,79,d3,..
"khjeh"=hex:f1,7e,f6,38,55,2e,58,79,51,dd,c5,ce,96,6f,96,da,18,44,6e,9e,d0,..

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\sptd\Cfg\19659239224E364682FA4BAF72C53EA4\00000001\0Jf40]
"khjeh"=hex:a4,a1,bc,78,f6,21,45,1a,73,81,03,de,82,bd,00,4c,50,29,9d,d5,9c,..

scanning hidden registry entries ...

scanning hidden files ...

scan completed successfully
hidden processes: 0
hidden services: 0
hidden files: 0


Remaining Services:
------------------



Authorized Application Key Export:

[HKEY_LOCAL_MACHINE\system\currentcontrolset\services\sharedaccess\parameters\firewallpolicy\standardprofile\authorizedapplications\list]
"%windir%\\Network Diagnostic\\xpnetdiag.exe"="%windir%\\Network Diagnostic\\xpnetdiag.exe:*:Enabled:@xpsp3res.dll,-20000"
"%windir%\\system32\\sessmgr.exe"="%windir%\\system32\\sessmgr.exe:*:enabled:@xpsp2res.dll,-22019"
"E:\\Program Files\\MSN Messenger\\msnmsgr.exe"="E:\\Program Files\\MSN Messenger\\msnmsgr.exe:*:Enabled:Windows Live Messenger 8.1"
"E:\\Program Files\\MSN Messenger\\livecall.exe"="E:\\Program Files\\MSN Messenger\\livecall.exe:*:Enabled:Windows Live Messenger 8.1 (Phone)"
"E:\\Program Files\\Yahoo!\\Messenger\\YahooMessenger.exe"="E:\\Program Files\\Yahoo!\\Messenger\\YahooMessenger.exe:*:Enabled:Yahoo! Messenger"
"E:\\Program Files\\Yahoo!\\Messenger\\YServer.exe"="E:\\Program Files\\Yahoo!\\Messenger\\YServer.exe:*:Enabled:Yahoo! FT Server"
"E:\\Program Files\\Microsoft Virtual PC\\Virtual PC.exe"="E:\\Program Files\\Microsoft Virtual PC\\Virtual PC.exe:*:Enabled:Virtual PC 2007"

[HKEY_LOCAL_MACHINE\system\currentcontrolset\services\sharedaccess\parameters\firewallpolicy\domainprofile\authorizedapplications\list]
"%windir%\\Network Diagnostic\\xpnetdiag.exe"="%windir%\\Network Diagnostic\\xpnetdiag.exe:*:Enabled:@xpsp3res.dll,-20000"
"%windir%\\system32\\sessmgr.exe"="%windir%\\system32\\sessmgr.exe:*:enabled:@xpsp2res.dll,-22019"
"E:\\Program Files\\MSN Messenger\\msnmsgr.exe"="E:\\Program Files\\MSN Messenger\\msnmsgr.exe:*:Enabled:Windows Live Messenger 8.1"
"E:\\Program Files\\MSN Messenger\\livecall.exe"="E:\\Program Files\\MSN Messenger\\livecall.exe:*:Enabled:Windows Live Messenger 8.1 (Phone)"

Remaining Files:
---------------


Files with Hidden Attributes:

Tue 13 Nov 2007	   165,232 A..H. --- "E:\Documents and Settings\Administrator\Application Data\Microsoft\Virtual PC\VPCKeyboard.dll"

Finished!


I also have a hijack this log if needed.

#5 quietman7

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Posted 13 November 2007 - 06:08 PM

Did you submit the file to jotti's virusscan or virustotal.com as buddy215 suggested? If not, do so and post the results back here.
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#6 mrklean93

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Posted 13 November 2007 - 06:24 PM

The only problem is I searched my computer and it did not find the .exe. Yes hidden files are viewable (I always have them viewable) So I cannot post it to the online file scanners.

I ran an Avast! scan and a Spybot scan, and they came up with no flags.

Is there any other way to find the file?

#7 quietman7

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Posted 13 November 2007 - 06:40 PM

It may have already been removed. That would explain why SDFix did not detect it on your system. Has there been any more sign of that file in Task Manager?

Use Windows Search feature > More advanced options. To do this, go to Start -> Search and click For Files or Folders....
  • Click All files and folders.
  • Type in the name of the file under "Search by...criteria."
  • Click More advanced options and check these options:
    • "Search system folders"
    • "Search hidden files and folders"
    • "Search subfolders"
  • Then click "Search" to look for the file(s).

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#8 mrklean93

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Posted 13 November 2007 - 06:55 PM

Here's the status as of now. Instead of it being called system.exe it is now called just System. I tried ending the process with the taskkill /f command in a CMD window and it made windows come up with Windows is shutting down window saying I had 1 minute until shutdown. I stopped this count down with the shutdown -a command and it froze my computer and I restarted.

I searched for just System now, and I found a folder in an odd place. It is E:\Documents and Settings\Administrator\Windows\System (E is Local drive)

I haven't tried deleting it but it is empty so maybe it was already deleted?

#9 buddy215

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Posted 13 November 2007 - 06:57 PM

According to the link below, one piece of malware that uses "system.exe is located in C:\Windows\Security\System.exe
It will also show up in a Hijack This Log in an O4 entry.
http://www.bleepingcomputer.com/startups/S....exe-16809.html

Did the Super Antispyware scan find anything?

By the way, I have "system" in task manager but not "system.exe"
“Every atom in your body came from a star that exploded and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics...you are all stardust.”Lawrence M. Krauss
A 1792 U.S. penny, designed in part by Thomas Jefferson and George Washington, reads “Liberty Parent of Science & Industry.”

#10 mrklean93

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Posted 13 November 2007 - 07:19 PM

Super antispyware didn't find anything.

System.exe is not in the folder you suggested.

System.exe is not in task manager.



I think the problem has been cleared up.

You may close this one if you like.

#11 quietman7

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Posted 14 November 2007 - 08:13 AM

Go ahead and Set a New Restore Point to 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 recent Restore Point.
  • Go to Start > Run and type: Cleanmgr
  • Click "OK".
  • Click the "More Options" Tab.
  • Click "Clean Up" in the System Restore section to remove all previous restore points except the newly created one.
Then to protect yourself against malware and reduce the potential for re-infection, be sure to read:
"Simple and easy ways to keep your computer safe".
"How did I get infected?, With steps so it does not happen again!".
"The Ten Most Dangerous Things Users Do Online".
"The 10 Biggest Security Risks".
"Hardening Windows Security - Part 1" and "Hardening Windows Security - Part 2".
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