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Unknown Malware


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#1 SRTA_JL

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Posted 04 March 2009 - 06:56 PM

SYSTEM SPECS
OS: MS Windows XP Pro SP3
AV: Symantec AV 10 Corp.

PROBLEM
Trying to run cmd.exe or regedit.exe causes explorer to crash and restart. But, renaming cmd.exe to something else works fine.
Some Google results are redirected to popup sites (bleepingcomputer is one of the sites being redirected). Explorer crashes after login.


ATTEMPTED FIXES
SAV10 full scan in Safe Mode w/ Cmd Prompt (cmd had a modified name) with definitions from 03/03/09
Slaved the drive and did a full scan with Symantec Endpoint with definitions from 03/03/09
Full MalwareBytes scan in regular mode
Slaved drive and scanned with MBAS

After all of that, the malware is still there.
Halp?

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#2 boopme

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Posted 04 March 2009 - 10:58 PM

Was anything found with MBAM?

From your regular user account..
Download Attribune's ATF Cleaner and then SUPERAntiSpyware , Free Home Version. Save both to desktop ..
DO NOT run yet.
Open SUPER from icon and install and Update it
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 yet.

Now reboot into Safe Mode: How to enter safe mode(XP)
Using the F8 Method
Restart your computer.
When the machine first starts again it will generally list some equipment that is installed in your machine, amount of memory, hard drives installed etc. At this point you should gently tap the F8 key repeatedly until you are presented with a Windows XP Advanced Options menu.
Select the option for Safe Mode using the arrow keys.
Then press enter on your keyboard to boot into 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 or Opera browser click that browser 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
.

NOW Scan with SUPER
Open from the desktop icon or the program Files list
On the left, make sure you check C:\Fixed Drive.
Perform a Complete scan. After scan,Verify they are all checked.
Click OK on the summary screen to quarantine all found items.
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.
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

#3 SRTA_JL

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Posted 05 March 2009 - 10:30 AM

No, MBAM didn't detect anything.

But I found the solution in another thread:

http://www.bleepingcomputer.com/forums/t/208323/google-redirects-and-cmd-will-not-run/

The bad file was called C:\WINDOWS\dohygxo.qhg and accessed itself from the registry with C:\WINDOWS\system32\..\dohygxo.qhg (note the ".." to go up a dir).

I removed this file from the registry and from the file system and everything works fine.

I've also notified Symantec of this issue and they've released a rapidrelease executable for me to run.

Thank you for your halp!

#4 boopme

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Posted 05 March 2009 - 04:22 PM

Glad to hear it and you're welcome!! Thanks for posting your fix.
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.
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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