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Worms and Trojans being downloaded to temp file - help


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#1 TheRabbit

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Posted 17 February 2009 - 08:21 PM

Hi guys,

Let me just give you a run through of what I have done and where I am now.
First, I downloaded a file that I shouldn't have and it infected my system. I am running windows xp professional.

The virus proceeded to destroy my antivirus software, edit my registry, downloaded a bunch of stuff, and then destroy my internet connection. Iexplorer kept on starting its process and I think that was how the virus was downloading stuff.

I was using antivir, but the virus destroyed that. I cannot uninstall it and when I try to reinstall I get a CRC sum of (filename) has changed! This could be due to a virus!

After that, I booted up into the ubuntu partition that I was playing around with and downloaded AVG for linux. However, that only allows you to test files and does not actually remove them. I went in and deleted everything that was found and then rebooted back into windows. I ran spybot search and destroy and removed everything I found there. I ran combofix and that found some stuff. Then I installed AVG free, and then everything went crazy. AVG detected almost everything as a win32/heur virus and maxed my cpu out like crazy. I uninstalled AVG free and ran system restore.

This is where I got my drivers back up and working due to the system restore. I then installed avast antivirus and did a bootup scan. That also detected a lot of stuff as Win32:JunkPoly [Cryp]. Now, whenever I boot up, zone alarm tells me that generic host processes for win32 services is trying to access the internet. When I do not allow this, I cannot get online. However, when I do allow this, I can get online. But once in a while avast tells me that a virus has been downloaded into the temp folder. Iexplorer still starts up but I have set zonealarm to just kill the process. Also, services.exe in the system32 folder keeps on trying to connect to the ip addresses listed here: http://www.threatexpert.com/report.aspx?md...7d7fb4ebf19911e
The weird thing now is that I cannot run combofix anymore. When i try to run it, it gives me the win32 only incompatible os error. Also, I still cannot install antivir.

I have just downloaded hijackthis and did a scan.

Please tell me what logs you need me to post.
I have the original AVG scan from ubuntu log
The combofix log from when it worked
The combofix error (cannot run) log
The avast boot scan log
The avast temp file virus warnings
And the hijackthis log I just ran.

Thank you!

Edit: Moved topic from XP to the more appropriate forum. ~ Animal

-edit-
Sorry first time posting here.
I got combofix back up and running but I have not run it yet. Avast for some reason classified find.exe as Win32:JunkPoly. But rescanning it now, it comes up as nothing, so I restored it.

Edited by TheRabbit, 17 February 2009 - 11:58 PM.


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#2 TheRabbit

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Posted 18 February 2009 - 05:32 PM

Update.
When I returned from hibernate today, I got the following virus warning from avast:

File name: C:\WINDOWS\TEMP\VRTC9.tmp
Malware name: Win32:Trojan-gen {Other}
Malware type: Virus/Worm
VPS version: 090217-0, 02/17/2009

And it tried to access the internet, but I stopped it with zonealarm.

Also, when I delete the files in the temp folder marked as viruses plus the ones that avast does not pick up but the "online malware scan" does, a folder called "_av_proI.tm~a07760" is created then disappears.

Any help would be appreciated.

Thanks.

Edited by TheRabbit, 18 February 2009 - 06:22 PM.


#3 rigel

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Posted 18 February 2009 - 06:52 PM

Let's start here...

Hi and welcome to BleepingComputer :thumbsup:

The process of cleaning your computer may require temporarily disabliling some security programs. If you are using SpyBot Search and Destroy, please refer to Note 2 at the bottom of this page.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • 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.

Note 2:
-- MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes (like Spybot's Teatimer), they may interfere with the fix or alert you after scanning with MBAM. Please disable such programs until disinfection is complete or permit them to allow the changes. To disable these programs, please view this topic: How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#4 TheRabbit

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Posted 18 February 2009 - 11:54 PM

Hi rigel,

Thanks for you help. Here is the log from malwarebytes

Malwarebytes' Anti-Malware 1.34
Database version: 1778
Windows 5.1.2600 Service Pack 3

2/18/2009 11:34:52 PM
mbam-log-2009-02-18 (23-34-52).txt

Scan type: Quick Scan
Objects scanned: 74338
Time elapsed: 7 minute(s), 52 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: 6

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:
C:\WINDOWS\system32\3.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\5.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\7.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\8.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\B.tmp (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\C.tmp (Trojan.Agent) -> Quarantined and deleted successfully.

--

Although these have been removed, whenever I start a new internet connection I get a new virus alert as the one I stated above (the Win32:Trojan-gen {other} virus and some process tries to access the internet.
Right now it has renamed itself to VrT14E.tmp as the virus, and VRT14F.tmp as the file trying to access the internet (this is not detected as avast), and a 0kb file is created called DD150.tmp. All these files are in the c:\windows\temp\ folder.
Also, iexplorer still tries to run.

Edited by TheRabbit, 19 February 2009 - 12:14 AM.


#5 rigel

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Posted 19 February 2009 - 08:28 AM

Trojan Agent is tough to remove and will require several scans.

Please print out and follow these instructions: "How to use SDFix". <- This program is for Windows 2000/XP ONLY.
When using this tool, you must use the Administrator's account or an account with "Administrative rights"
  • Disconnect from the Internet and temporarily disable your anti-virus, script blocking and any real time protection programs before performing a scan.
  • When done, the SDFix report log will open in notepad and automatically be saved in the SDFix folder as Report.txt.
  • If SDFix is unable to run after rebooting from Safe Mode, run SDFix in either Mode, and type F, then press Enter for it to finish the final stage and produce the report.
  • Please copy and paste the contents of Report.txt in your next reply.
  • Be sure to renable you anti-virus and and other security programs before connecting to the Internet.
-- If the computer has been infected with the VirusAlert! malware warning from the clock and the Start Menu icons or drives are not visible, open the SDFix folder, right-click on either the XP_VirusAlert_Repair.inf or W2K VirusAlert_Repair.inf (depending on your version of Windows) and select Install from the Context menu. Then reboot to apply the changes.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#6 TheRabbit

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Posted 19 February 2009 - 09:59 PM

Hi Rigel,

I tried to follow your instructions, but after I rebooted, started in safemode, and ran the program, I got the blue screen and windows crashed.

#7 rigel

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Posted 19 February 2009 - 10:45 PM

Ok... Let's try this procedure, then we can go back to SDFix...

Please download ATF Cleaner by Atribune & save it to your desktop.
alternate download link 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.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#8 TheRabbit

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Posted 20 February 2009 - 08:18 PM

Hi rigel,

Thank you for all your help. I read online that the virus I have is the type that can mutate and infect parts of other files. Other people who have dealt with it say that all the virus scanners can do is to delete those files since the virus has corrupted them too much.
So now that it is the weekend, I will reformat my computer.

I appreciate all the time you have devoted to helping

Thanks!

#9 rigel

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Posted 20 February 2009 - 08:29 PM

Hi TheRabbit,

Malware can be very stubborn to remove. I understand your wish to reformat. In some cases, a reformat is the only way to be 100% sure your computer is clean. If there is anything we can help with, please let us know.

Have a good weekend :thumbsup:

rigel

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith





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