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I Cannot Access Major Antivirus Websites


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#1 Creios

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Posted 24 January 2008 - 01:45 PM

Good day!

I found a post from this website which seemed to be resolved. Here's the link:

http://www.bleepingcomputer.com/forums/t/86320/carolion-hjt-log/

I can't also access major antivirus website such as mcafee, symantec, trendmicro, kaspersky and grisoft.

I downloaded HostsXpert based on the advise that I found from the link above. But there's a problem. Whenever I am trying to restore MS Host File, an error message always prompts.

ERROR: Cannot create file C:\Windows\System32\Drivers\ETC\hosts

In addition, in the log created by HostsXpert, ALL of major antivirus website are there in the list with IP-like numbers 127.0.0.1. I think here lies the problem because all sites with that number are inaccessible.

Thank you in advance.

------------------
Another problem:

I was struck by lots of viruses recently. I think (hopefully) I got rid of them all. But after that, I am now experiencing random "NT Authority System Shutdown".

Please help. Thanks!

Edited by Creios, 24 January 2008 - 01:55 PM.


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#2 Tomo2

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Posted 24 January 2008 - 02:55 PM

You shouldn't take advice from someone elses HJT post, they may have a completely different problem.
Before you go of editing the Hosts file you should know what to edit and do a system scan. (BTW 127.0.0.1 Is your computer.)
What antivirus software do you use? Make sure it is up-to-date and run a scan with it.
If you don't have any AV program and your just grabbing help from the sites above then try downloading Avast! Antivirus and Spybot Search & Destroy after installing make sure both are up-to-date and run a scan in spybot and a boot scan with avast.

I am now experiencing random "NT Authority System Shutdown".

This would be caused by a virus executing it as itself or killing a vital process to make the system initiate the shutdown.

Hope that helps!

Edited by Tomo2, 24 January 2008 - 02:56 PM.

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#3 quietman7

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Posted 24 January 2008 - 03:53 PM

random "NT Authority System Shutdown".

Can you post the entire message?

The symptoms you describe could be malware related or they could be due to hardware or overheating problems caused by a failed processor fan, bad memory (RAM), failing power supply, underpowered power supply, CPU overheating, motherboard, video card, faulty drivers, BIOS and firmware problems, dirty hardware, etc. If the computer is overheating, it usually begins to restart on a more regular basis.

However, some rootkits can also trigger BSODs, shutdowns and error messages so download and scan with AVG Anti-Rootkit.
  • Double click avgarkt-setup-1.1.0.42.exe to install. By default it will install to C:\Program Files\GRISOFT\AVG Anti-Rootkit
  • Accept the license and follow the prompts to install.
  • You will be asked to reboot to finish the installation so click "Finish".
  • After rebooting, double-click the icon for AVG Anti-Rootkit on your desktop.
  • You will see a window with four buttons at the bottom.
  • Click "Search For Rootkits" and the scan will begin.
  • You will see the progress bar moving from left to right. The scan will take some so be patient and let it finish.
  • When the scan has finished, a small window will open so you can view the results.
  • Right click and select "Save Result To File".
  • By default the file will be saved with a .csv extension. (You can use notepad to open the .cvs file)
  • If anything was found, click "Remove selected items"
  • If nothing was found, please click the "Perform in-depth Search" saving anything found to file as before.
Note: Close all open windows, programs, and DO NOT USE the computer while scanning. If the scan is performed while the computer is in use, false positives may appear in the scan results. This is caused by files or registry entries being deleted automatically.
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#4 Creios

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Posted 25 January 2008 - 06:08 AM

Tomo 2 @ Thank you so much for the help! :thumbsup: Avast was able to detect more trojans SuperAntiSpyware and AVG failed to find. Aside from that, I can now access major antivirus I cannot access before.

Quietman7 @ Thank you too. My computer was overworking recently, maybe that contributes to the problem.

I have no "System Shutdown" for hours but let's see during the succeeding 2 days.

The only problem I have now is that my computer keeps detecting trojans. I fear that there's still downloader somewhere in my computer left undetected.

Thanks!

#5 quietman7

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Posted 25 January 2008 - 08:37 AM

Can you provide specific file names associated with these Trojans and if so, where are they located (full file path) at on your system?

Have your tried running your scans in "Safe Mode"?
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#6 Creios

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Posted 26 January 2008 - 01:52 AM

My brother accidentally disabled the Avast. I was again bombarded by virus. I know for sure these are some of them.

Detected by Avast during Safemode Scan (after the infestation):

Sign of "Win32:VB-GLI [Trj]" has been found in "C:\WINDOWS\system\del.exe\[UPX]\[PE-PaCK]" file.

Sign of "Win32:VB-GLI [Trj]" has been found in "C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\Content.IE5\OZC5GB0P\del[1].gif\[UPX]\[PE-PaCK]" file.

Sign of "Win32:VB-GLI [Trj]" has been found in "C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\Content.IE5\K5UVKXUJ\del[1].gif\[Upack]" file.

Sign of "Win32:Trojan-gen {Other}" has been found in "C:\Documents and Settings\All Users\Desktop\Richardson\New

Sign of "Win32:Rbot-EYI [Trj]" has been found in "c:\windows\system32\svshost.exe" file.

Sign of "Win32:Rbot-EYI [Trj]" has been found in "c:\windows\system32\svshost.exe" file.

Sign of "Win32:Rbot-EYI [Trj]" has been found in "C:\WINDOWS\SYSTEM32\eraseme_22620.exe" file.

Sign of "Win32:Rbot-EYI [Trj]" has been found in "C:\WINDOWS\system32\eraseme_00818.exe" file.

Sign of "Win32:Nulprot-B [Trj]" has been found in "C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\Content.IE5\KPMZCX63\u_f1_v34_72_u[1].exe\[Embedded#02400]" file.

Sign of "Win32:AKbot-B [Trj]" has been found in "C:\WINDOWS\SYSTEM32\DRIVERS\hosts" file.

Sign of "Win32:AKbot-B [Trj]" has been found in "C:\WINDOWS\SYSTEM32\DRIVERS\etc\hosts.20080125-020155.backup" file.

Sign of "Win32:AKbot-B [Trj]" has been found in "C:\WINDOWS\SYSTEM32\DRIVERS\etc\hosts" file.

Sign of "Win32:AKbot-B [Trj]" has been found in "C:\WINDOWS\SYSTEM32\DRIVERS\etc\hosts" file.

Sign of "Win32:AKbot-B [Trj]" has been found in "C:\WINDOWS\hosts" file.

Sign of "Win32:AKbot-B [Trj]" has been found in "C:\WINDOWS\hosts" file.

Sign of "Win32:AKbot-B [Trj]" has been found in "C:\RECYCLED\Dc61" file.

Sign of "Win32:Agent-MDW [Trj]" has been found in "C:\WINDOWS\nwan.dat\[Embedded#04a60]" file.

Sign of "Win32:Agent-MDW [Trj]" has been found in "C:\Documents and Settings\LocalService\Local Settings\Temporary Internet Files\Content.IE5\KPMZCX63\u_f1_v34_72_u[1].exe\[Embedded#02400]\[Embedded#04a60]" file.

Sign of "BV:Ftp-L [Trj]" has been found in "C:\WINDOWS\SYSTEM32\i" file.

Sign of "BV:Ftp-L [Trj]" has been found in "C:\WINDOWS\system32\i" file.

Sign of "BV:Ftp-L [Trj]" has been found in "C:\WINDOWS\SYSTEM32\i" file.


NOT found by Avast (I deleted them manually)

Msets.exe
tohel.exe
helper.exe
nadlocop.exe
delnew.exe
run.exe
eraseme_83863.exe (prefetch)
msets.exe (prefetch)


Please help. Thank you in advance.

Edited by Creios, 26 January 2008 - 01:57 AM.


#7 quietman7

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Posted 26 January 2008 - 10:30 AM

Please download SDFix by AndyManchesta and save it to your desktop.
alternate zipped version
When using this tool, you must use the Administrator's account or an account with "Administrative rights"
  • Very Important! Temporarily disable your anti-virus, script blocking and any anti-malware real-time protection before performing a scan. They can interfere with SDFix or remove some of its embedded files which may cause "unpredictable results".
  • Click on this link to see a list of programs that should be disabled. The list is not all inclusive.
  • Disconnect from the Internet before running SDFix.
  • 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 a copy into the SDFix folder as Report.txt.
  • Copy and paste the contents of Report.txt in your next reply.
  • Be sure to re-enable your anti-virus and other security programs before connecting to the Internet.
-- 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 copy/paste the following line:
%systemdrive%\SDFix\apps\swreg IMPORT %systemdrive%\SDFix\apps\Enable_Command_Prompt.reg
Press Ok and then run SDFix again.

-- If the Command Prompt window flashes on then off again on XP or Win 2000, please go to Start Menu > Run > and copy/paste the following line:
%systemdrive%\SDFix\apps\FixPath.exe /Q
Reboot and then run SDFix again.

-- If SDFix still does not run, check the %comspec% variable. Right-click My Computer > click Properties > Advanced > Environment Variables and check that the ComSpec variable points to cmd.exe.
%SystemRoot%\system32\cmd.exe


Please download ATF Cleaner by Atribune & save it to your desktop. DO NOT use yet.
Please download and install SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here and unzip into the program's folder.)
  • Under the "Configuration and Preferences", click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen and exit the program.
  • Do not run a scan 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".

Double-click ATF-Cleaner.exe to run the program.
  • Under Main "Select Files to Delete" choose: Select All.
  • Click the Empty Selected button.
  • If you use Firefox browser click Firefox at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • If you use Opera browser click Opera at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • Click Exit on the Main menu to close the program.
Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

Scan with SUPERAntiSpyware as follows:
  • Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.

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#8 Creios

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Posted 27 January 2008 - 08:00 AM

I have changed my Antivirus from Avast to Kaspersky. I ran complete can and Kaspersky was able find several Trojans/Downloaders.

After reading this post, I did what it said.

Here's what happened.

1. I scanned using SDFix (safemode) and here's the result

SDFix: Version 1.131

Run by USER on Sun 01/27/2008 at 05:09 PM

Microsoft Windows XP [Version 5.1.2600]

Running From: C:\DOCUME~1\USER\Desktop\SDFix

Safe Mode:
Checking Services:


Restoring Windows Registry Values
Restoring Windows Default Hosts File

Rebooting...

Service NdisWon - Deleted after Reboot

Normal Mode:
Checking Files:

Trojan Files Found:

C:\WINDOWS\system32\winlogon.dll - Deleted



Folder C:\Documents and Settings\All Users\Documents\Settings - Removed


Removing Temp Files...

ADS Check:

C:\WINDOWS
No streams found.

C:\WINDOWS\explorer.exe
No streams found.

C:\WINDOWS\system32
No streams found.

C:\WINDOWS\system32\svchost.exe
No streams found.

C:\WINDOWS\system32\ntoskrnl.exe
No streams found.



Final Check:

catchme 0.3.1344.2 W2K/XP/Vista - rootkit/stealth malware detector by Gmer, http://www.gmer.net
Rootkit scan 2008-01-27 17:13:52
Windows 5.1.2600 Service Pack 1 FAT NTAPI

scanning hidden processes ...

scanning hidden services ...

scanning hidden autostart entries ...

scanning hidden files ...

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


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



Authorized Application Key Export:

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

File Backups: - C:\DOCUME~1\USER\Desktop\SDFix\backups\backups.zip

Files with Hidden Attributes:

Sat 20 Jan 2007 401 ..SH. --- "C:\WINDOWS\All Users\DRM\DRMv10.bak"
Sat 20 Jan 2007 4,348 ..SH. --- "C:\WINDOWS\All Users\DRM\DRMv1.bak"
Sun 2 Jul 2006 21,504 A..H. --- "C:\Documents and Settings\All Users\Desktop\~WRL0003.tmp"
Sun 2 Jul 2006 22,528 A..H. --- "C:\Documents and Settings\All Users\Desktop\~WRL0001.tmp"
Mon 4 Dec 2006 183,808 A..H. --- "C:\Documents and Settings\USER\My Documents\~WRL0003.tmp"
Mon 8 Jan 2007 123,904 A..H. --- "C:\Documents and Settings\USER\My Documents\~WRL1675.tmp"
Fri 16 Nov 2007 94,208 ...H. --- "C:\Documents and Settings\USER\Desktop\~WRL2811.tmp"
Fri 16 Nov 2007 94,720 ...H. --- "C:\Documents and Settings\USER\Desktop\~WRL2429.tmp"
Fri 16 Nov 2007 94,720 ...H. --- "C:\Documents and Settings\USER\Desktop\~WRL2238.tmp"
Fri 16 Nov 2007 95,744 ...H. --- "C:\Documents and Settings\USER\Desktop\~WRL2505.tmp"
Fri 16 Nov 2007 95,744 ...H. --- "C:\Documents and Settings\USER\Desktop\~WRL1845.tmp"
Fri 16 Nov 2007 95,744 ...H. --- "C:\Documents and Settings\USER\Desktop\~WRL2246.tmp"
Fri 16 Nov 2007 96,768 ...H. --- "C:\Documents and Settings\USER\Desktop\~WRL2893.tmp"
Sun 15 Apr 2007 183,808 A..H. --- "C:\Documents and Settings\All Users\Desktop\Neo\gba2\~WRL0003.tmp"
Sun 15 Apr 2007 184,320 A..H. --- "C:\Documents and Settings\All Users\Desktop\Neo\gba2\~WRL0005.tmp"
Sun 15 Apr 2007 345,088 A..H. --- "C:\Documents and Settings\All Users\Desktop\Neo\gba2\~WRL0283.tmp"
Sun 15 Apr 2007 345,088 A..H. --- "C:\Documents and Settings\All Users\Desktop\Neo\gba2\~WRL1454.tmp"
Sun 15 Apr 2007 345,088 A..H. --- "C:\Documents and Settings\All Users\Desktop\Neo\gba2\~WRL1739.tmp"
Sat 17 Feb 2007 29,696 A..H. --- "C:\Documents and Settings\USER\Application Data\Microsoft\Word\~WRL0003.tmp"
Sat 3 Feb 2007 29,696 A..H. --- "C:\Documents and Settings\USER\Application Data\Microsoft\Word\~WRL1825.tmp"

Finished!


2. Reboot and started ATF cleaner, then SuperAntiSpyware (safemode).

No threats found.

3. I checked new files created today and found this.

C:\WINDOWS\SYSTEM32\DRIVERS\etc\HOSTS

4. I thought the file above is a virus, I rerun Kaspersky without deleting the file.

No threats found.

5. I rerun SDFix.

Nothing was found.

6. I specifically designate the above file for scanning.

I was surprised. It was not infected.

7. Now I think my computer is clean now.

8. I opened this browser to finally post this result.

Not less than a minute Kaspersky popped up and found another trojan.

deleted: Trojan program Backdoor.Win32.Rbot.gay File: C:\WINDOWS\system32\2k3.exe


Do you think my computer is still infected?

#9 quietman7

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Posted 27 January 2008 - 09:19 AM

The HOSTS file is a text file that has no extension and can be viewed using notepad.

The HOSTS file is found in these default locations:
Windows Vista -> C:\Windows\system32\drivers\etc\hosts
Windows XP -> C:\Windows\system32\drivers\etc\hosts
Windows 2K -> C:\WInnt\system32\drivers\etc\hosts
Windows 98 -> C:\Windows\hosts
Windoes ME -> C:\Windows\hosts

An example HOSTS file is shown here.

To view the Hosts file, go to Start > Run and type: notepad %windir%\system32\drivers\etc\hosts

Your system had several Backdoor Trojans, IRCBots. These 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 from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online 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 breach.

Although the backdoor Trojan was identified and 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. Please read "When should I re-format?" and "Reformatting the computer or troubleshooting; which is best?".

There are no shortcuts or guarantees when it comes to malware removal. Sometimes it takes several efforts with different tools to do the job. Even then, with some types of malware infections, the task can be arduous. In some instances an infection may have caused so much damage to your system that it cannot be successfully cleaned or repaired. In those cases, recovery is not possible and the only option is to reformat/reinstall the OS.
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#10 Creios

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Posted 28 January 2008 - 05:25 AM

I think my computer is ok now. I tried to disable my antivirus for more than 12 hours and no sign of virus yet--no more tohel, msets, etc. No System Shutdown yet. And I can access antivirus sites now. I think what Kaspersky detected was the last remnant of the virus.

Thanks Quietman7 :thumbsup: You're very helpful. :flowers:

#11 quietman7

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Posted 28 January 2008 - 09:25 AM

If there are no more problems or signs of infection, 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".
  • Click the "More Options" Tab.
  • Click "Clean Up" in the System Restore section to remove all previous restore points except the newly created one.
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!".
"Best Practices - Internet Safety for 2008".
"Hardening Windows Security - Part 1".
"Hardening Windows Security - Part 2".
"IE Recommended Minimal Security Settings".
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