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Windows Vista - Rootkit - BSOD Normal Boot


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5 replies to this topic

#1 joshuaken

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Posted 22 August 2011 - 05:01 PM

Hi! My friend has a Toshiba laptop that she gave to me to fix. It's running Windows Vista Home Premium x86.

It has a rootkit in the mbr. Now the machine will only boot to SafeMode. If I try to boot normally, I receive BSOD as soon as I see the desktop.

How should I go about removing the rootkit?

Thanks in advance!

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#2 Broni

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Posted 22 August 2011 - 05:42 PM

Welcome aboard Posted Image

Run this tool from Safe Mode...

Please download GMER from one of the following locations and save it to your desktop:
  • Main Mirror
    This version will download a randomly named file (Recommended)
  • Zipped Mirror
    This version will download a zip file you will need to extract first. If you use this mirror, please extract the zip file to your desktop.
  • Disconnect from the Internet and close all running programs.
  • Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.
  • Double-click on the randomly named GMER file (i.e. n7gmo46c.exe) and allow the gmer.sys driver to load if asked.
  • Note: If you downloaded the zipped version, extract the file to its own folder such as C:\gmer and then double-click on gmer.exe.

    Posted Image
  • GMER will open to the Rootkit/Malware tab and perform an automatic quick scan when first run. (do not use the computer while the scan is in progress)
  • If you receive a WARNING!!! about rootkit activity and are asked to fully scan your system...click NO.
  • Now click the Scan button. If you see a rootkit warning window, click OK.
  • When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log.
  • Click the Copy button and paste the results into your next reply.
  • Exit GMER and be sure to re-enable your anti-virus, Firewall and any other security programs you had disabled.

IMPORTANT! If for some reason GMER refuses to run, try again.
If it still fails, try to UN-check "Devices" in right pane.
If still no joy, try to run it from Safe Mode.

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#3 joshuaken

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Posted 23 August 2011 - 08:45 AM

GMER 1.0.15.15641 - http://www.gmer.net
Rootkit scan 2011-08-22 20:21:34
Windows 6.0.6002 Service Pack 2 Harddisk0\DR0 -> \Device\Ide\IdeDeviceP0T0L0-0 WDC_WD2500BEVS-26UST0 rev.01.01A01
Running: wqc4usgk.exe; Driver: C:\Users\Sue\AppData\Local\Temp\pfddypow.sys


---- Kernel code sections - GMER 1.0.15 ----

.text C:\Windows\system32\DRIVERS\tos_sps32.sys section is writeable [0x8A15C000, 0x4036D, 0xE8000020]
.dsrt C:\Windows\system32\DRIVERS\tos_sps32.sys unknown last section [0x8A1A5000, 0x510, 0x40000040]

---- Devices - GMER 1.0.15 ----

AttachedDevice \Driver\kbdclass \Device\KeyboardClass0 Wdf01000.sys (WDF Dynamic/Microsoft Corporation)
AttachedDevice \Driver\kbdclass \Device\KeyboardClass1 Wdf01000.sys (WDF Dynamic/Microsoft Corporation)

Device \FileSystem\cdfs \Cdfs 807EB05C

---- Registry - GMER 1.0.15 ----

Reg HKLM\SYSTEM\CurrentControlSet\Control\Lsa@LsaPid 596
Reg HKLM\SYSTEM\CurrentControlSet\Control\Session Manager@PendingFileRenameOperations \??\C:\Users\All Users\Skype\Plugins\Local Cache\~Please do not delete files from this folder??\??\C:\ProgramData\Skype\Plugins\Local Cache\~Please do not delete files from this folder??
Reg HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management@ExistingPageFiles \??\C:\pagefile.sys?
Reg HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters@BootId 134
Reg HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters@BaseTime 327866235
Reg HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters@VideoInitTime 15
Reg HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server@InstanceID 0e73703b-86ef-4fbe-9da7-7caf492
Reg HKLM\SYSTEM\CurrentControlSet\Control\WMI\Autologger\WdiContextLog@FileCounter 2
Reg HKLM\SYSTEM\CurrentControlSet\Services\Ecache\Parameters@ReadyBootPlanUsage 0
Reg HKLM\SYSTEM\CurrentControlSet\Services\Ecache\Parameters@LastBootStatus 0
Reg HKLM\SYSTEM\CurrentControlSet\Services\SynTP\Parameters@DetectTimeMS 1111
Reg HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-21-2117336356-3382254788-2717109415-1000@State 0
Reg HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\S-1-5-21-2117336356-3382254788-2717109415-1000@RefCount 5

---- EOF - GMER 1.0.15 ----

#4 Broni

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Posted 23 August 2011 - 07:37 PM

It has a rootkit in the mbr

What does make you think so?

Download aswMBR to your desktop.
Double click the aswMBR.exe to run it.
If you see this question: Would you like to download latest Avast! virus definitions?" say "Yes".
Click the "Scan" button to start scan:
Posted Image

On completion of the scan click "Save log", save it to your desktop and post in your next reply:
Posted Image

NOTE. aswMBR will create MBR.dat file on your desktop. This is a copy of your MBR. Do NOT delete it.

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#5 joshuaken

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Posted 24 August 2011 - 08:33 AM

It has a rootkit in the mbr


What does make you think so?


Because when I received the computer it would boot normally. It acted as if it had malware on the machine, so I ran a couple of scans. Both programs I used said it had a rootkit. The 1st program wouldn't touch it... The second program rendered the machine unbootable, with the exception of safe mode.

Correct me if I'm wrong, but aren't there rootkits out there that are untraceable in safe mode? If so, could that be why nothing seems to be showing (since I'm running all these scans in safe mode)?


Here is the log file from aswMBR...

aswMBR version 0.9.8.978 Copyright© 2011 AVAST Software
Run date: 2011-08-24 08:18:17
-----------------------------
08:18:17.230 OS Version: Windows 6.0.6002 Service Pack 2
08:18:17.230 Number of processors: 2 586 0x6802
08:18:17.230 ComputerName: SUE-PC UserName: Sue
08:18:17.869 Initialize success
08:19:35.698 AVAST engine defs: 11082401
08:19:54.558 Disk 0 (boot) \Device\Harddisk0\DR0 -> \Device\Ide\IdeDeviceP0T0L0-0
08:19:54.558 Disk 0 Vendor: WDC_WD2500BEVS-26UST0 01.01A01 Size: 238475MB BusType: 3
08:19:56.586 Disk 0 MBR read successfully
08:19:56.586 Disk 0 MBR scan
08:19:56.586 Disk 0 Windows VISTA default MBR code
08:19:56.602 Disk 0 scanning sectors +488396800
08:19:56.680 Disk 0 scanning C:\Windows\system32\drivers
08:20:06.523 Service scanning
08:20:08.192 Modules scanning
08:20:11.624 Disk 0 trace - called modules:
08:20:11.656 ntkrnlpa.exe CLASSPNP.SYS disk.sys acpi.sys hal.dll ataport.SYS pciide.sys PCIIDEX.SYS atapi.sys
08:20:11.656 1 nt!IofCallDriver -> \Device\Harddisk0\DR0[0x857699b0]
08:20:11.656 3 CLASSPNP.SYS[82f0e8b3] -> nt!IofCallDriver -> [0x85756918]
08:20:11.671 5 acpi.sys[806116bc] -> nt!IofCallDriver -> \Device\Ide\IdeDeviceP0T0L0-0[0x85754390]
08:20:12.560 AVAST engine scan C:\Windows
08:20:16.897 AVAST engine scan C:\Windows\system32
08:22:12.587 AVAST engine scan C:\Windows\system32\drivers
08:22:23.585 AVAST engine scan C:\Users\Sue
08:24:59.569 AVAST engine scan C:\ProgramData
08:26:02.968 Scan finished successfully
08:26:20.689 Disk 0 MBR has been saved successfully to "C:\Users\Sue\Desktop\MBR.dat"
08:26:20.705 The log file has been saved successfully to "C:\Users\Sue\Desktop\aswMBR.txt"

#6 Broni

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Posted 24 August 2011 - 07:39 PM

Both programs I used said it had a rootkit

Which programs would that be?

So far I see no rootkit presence.

Try this...
While in Safe Mode...

Go Start>Run (Start Search in Vista), type in:
msconfig
Click OK (hit Enter in Vista).

Click on Startup tab.
Click Disable all
IMPORTANT! In case of laptop, make sure, you do NOT disable any keyboard, or touchpad entries.

Click Services tab.
Put checkmark in Hide all Microsoft services
Click Disable all.

Click OK.
Restart computer in Normal Mode.

NOTE. If you use different firewall, than Windows firewall, turn Windows firewall on, just for this test, since your regular firewall won't be running.
If you use Windows firewall, you're fine.

Same problem?

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