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[DONE]Requesting assistance on a (probable) rootkit, part cured.

 
Post new topic   Reply to topic       All -> FavForums -> Rootkit Revelations [del.icio.us!] [digg it!] [reddit!]
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L D Marks

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IP: 86.138.*.*






PostPosted: Sat Jul 08, 2006 10:08 am    Post subject: Requesting assistance on a (probable) rootkit, part cured.
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I think I've partially cured (but probably not fully removed) a rootkit or something similar; I would appreciate comments.

The symptoms were popups, both casino and antivirus offers. In addition, windows (XP) disk cleanup crashed, defragmenter hung when showing the log and Norton Windoctor would not start.

I think the culprit was a program vkaloepwtj.exe. This is a packed image, so did not show up with anything except sysinternals process explorer. RootkitRevealer also showed it, plus some additional entries such as vkaloepwtj.dat, vkaloepwtj_nav.dat, vkaloepwtj_navps.dat in WINDOWS\system32. It was launched somewhere in the startup, but presumably because it was packed did not show anywhere except using NetSwitcher II.

I believe that I've partially cured it by first killing it (via process explorer) then stopping it from starting using Netswitcher. Both disk cleanup and Norton now work. However, I'm not certain that I've removed it fully, and would welcome suggestions.

N.B., Ad-Aware, Spybot, Windows Defender, F-Prot (and some others) only cured the symptoms (e.g. tracking cookies and a java trojan) and did not cure the problem.

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wng_z3r0

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Joined: Mar 21, 2005
Posts: 1248

1st Responders MVP RootKit Detection Hosts Rootkit Experts Team F@H

PostPosted: Sat Jul 08, 2006 4:26 pm    Post subject:
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Can you run a KAV online scan and post the results?

Please do an online scan with Kaspersky Online Scanner

You will be promted to install an ActiveX component from Kaspersky, Click Yes.

  • The program will launch and then start to download the latest definition files.
  • Once the scanner is installed and the definitions downloaded, click Next.
  • Now click on Scan Settings
  • In the scan settings make that the following are selected:
    • Scan using the following Anti-Virus database:
      • Extended (If available otherwise Standard) << very important to use extended if possible
    • Scan Options:
      • Scan Archives
      • Scan Mail Bases
  • Click OK
  • Now under select a target to scan select My Computer
  • The scan will take a while so be patient and let it run. Once the scan is complete it will display if your system has been infected.
  • Now click on the Save as Text button:
  • Save the file to your desktop.
  • Copy and paste that information in your next post.


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L. D. Marks

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PostPosted: Sat Jul 08, 2006 7:11 pm    Post subject: Online Scan Results
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Scan Settings:
Scan using the following antivirus database: extended
Scan Archives: true
Scan Mail Bases: true

Scan Target - My Computer:
C:\
D:\

Scan Statistics:
Total number of scanned objects: 279226
Number of viruses found: 4
Number of infected objects: 7
Number of suspicious objects: 0
Duration of the scan process: 01:53:22

Infected Object Name / Virus Name / Last Action
C:\Software\Aol-Spam\XoftSpySE429_191.exe/stream/data0041 Infected: not-a-virus:RiskTool.Win32.PsKill.n skipped
C:\Software\Aol-Spam\XoftSpySE429_191.exe/stream Infected: not-a-virus:RiskTool.Win32.PsKill.n skipped
C:\Software\Aol-Spam\XoftSpySE429_191.exe NSIS: infected - 2 skipped
C:\Software\Games\freesol.exe/WISE0021.BIN Infected: not-a-virus:AdWare.Win32.TimeSink skipped
C:\Software\Games\freesol.exe/WISE0023.BIN Infected: not-a-virus:AdWare.Win32.TimeSinc skipped
C:\Software\Games\freesol.exe WiseSFX: infected - 2 skipped
C:\WINDOWS\system32\vkaloepwtj.exe Infected: not-a-virus:AdWare.Win32.NaviPromo.t skipped

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swatkat

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Joined: Mar 04, 2005
Posts: 2039

MVP RootKit Detection Hosts Rootkit Experts Security Experts

PostPosted: Mon Jul 10, 2006 8:32 pm    Post subject: Re: Online Scan Results
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Hi,
Please download KillBox, extract it to your desktop.

Open Killbox.exe. Check the following box:-
Delete on Reboot
Highlight all the entries in the quote box below and then Copy them:-

Quote:
C:\Software\Games\freesol.exe
C:\WINDOWS\system32\vkaloepwtj.exe

Then in Killbox click File > Paste from Clipboard. At this point the "All Files" button should be enabled so you can click it. Click the "All Files" button.

Then click the Red X button and for the confirmation message that will appear, you will need to click "Yes". A second message will ask to Reboot now? You will need to click "Yes" to allow the reboot.

Note: Killbox will let you know if a file does not exist.

[If you have any issues with this method you can copy and paste the lines one at a time into the killbox top box. Then click the "Single File" button. Then click the Red X and for the confirmation message that will appear, you will need to click Yes. A second message will ask to Reboot now? you will need to click No until the last one at which time you click yes to allow the reboot.]


After the reboot, download GMER and extract it to a folder. Next, run the Gmer.exe program and click the "Rootkit" tab. Now, select these options from the list that is shown at the right-side of the GMER main window:-
  • System
  • Devices
  • Processes
  • Libraries
  • Modules
  • Services
  • Registry
  • Files

Next, select all the disk partitions (C:\, D:\ etc) from the list. Do NOT select the "Show All" option. Finally, click "Scan" and allow the scan to complete.

When the scan is completed, click "Copy" to copy the log and please post it back here.


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- Albert Einstein
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PostPosted: Tue Jul 11, 2006 9:42 am    Post subject:
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Thanks. I had already isolated vkaloepwtj.exe (and vkaloepwtj.dat vkaloepwtj_nav.dat vkaloepwtj_navps.dat) as a tarball using cygwin. I've transferred them to a HP/Unix box (sftp). I also gzip'd freesol.exe and transferred this as well. However, I'm 99% certain that this is a false positive. This is a ~2000 vintage free solitaire from the people who sell goodsol, and was not installed (has not been for years).

I've attached the results of the GMER scan below. For reference, it wants to copy itself to C:\WINDOWS\GMER.exe which my system is not allowing. I don't see anything obvious, but Netswitcher is still reporting a deactivated registry startup entry for vkaloepwtj which I cannot see anywhere else (Xteq-dotec X-Setup 6.6, Startup Cop 1.0.1.0, Startup Control Panel 2.8 ). I can go hunting in the registry....

GMER 1.0.10.10122 - http://www.gmer.net
Rootkit 2006-07-11 11:24:08
Windows 5.1.2600 Service Pack 2


---- System - GMER 1.0.10 ----

SSDT \??\C:\WINDOWS\system32\drivers\wpsdrvnt.sys ZwAllocateVirtualMemory
SSDT 89380528 ZwConnectPort
SSDT \??\C:\WINDOWS\system32\drivers\wpsdrvnt.sys ZwCreateThread
SSDT \??\C:\WINDOWS\system32\drivers\wpsdrvnt.sys ZwMapViewOfSection
SSDT \??\C:\Program Files\ewido anti-spyware 4.0\guard.sys ZwOpenProcess
SSDT \??\C:\WINDOWS\system32\drivers\wpsdrvnt.sys ZwProtectVirtualMemory
SSDT \??\C:\WINDOWS\system32\drivers\wpsdrvnt.sys ZwShutdownSystem
SSDT \??\C:\Program Files\ewido anti-spyware 4.0\guard.sys ZwTerminateProcess
SSDT \??\C:\WINDOWS\system32\drivers\wpsdrvnt.sys ZwWriteVirtualMemory

---- Devices - GMER 1.0.10 ----

Device \Driver\Tcpip \Device\Ip IRP_MJ_CREATE [BA279220] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Ip IRP_MJ_CLOSEIRP_MJ_READ [BA279480] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Ip IRP_MJ_INTERNAL_DEVICE_CONTROL [BA2795A0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Ip IRP_MJ_SHUTDOWN [BA2795D0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Tcp IRP_MJ_CREATE [BA279220] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Tcp IRP_MJ_CLOSEIRP_MJ_READ [BA279480] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Tcp IRP_MJ_INTERNAL_DEVICE_CONTROL [BA2795A0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Tcp IRP_MJ_SHUTDOWN [BA2795D0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Udp IRP_MJ_CREATE [BA279220] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Udp IRP_MJ_CLOSEIRP_MJ_READ [BA279480] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Udp IRP_MJ_INTERNAL_DEVICE_CONTROL [BA2795A0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\Udp IRP_MJ_SHUTDOWN [BA2795D0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\RawIp IRP_MJ_CREATE [BA279220] wpsdrvnt.sys
Device \Driver\Tcpip \Device\RawIp IRP_MJ_CLOSEIRP_MJ_READ [BA279480] wpsdrvnt.sys
Device \Driver\Tcpip \Device\RawIp IRP_MJ_INTERNAL_DEVICE_CONTROL [BA2795A0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\RawIp IRP_MJ_SHUTDOWN [BA2795D0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\IPMULTICAST IRP_MJ_CREATE [BA279220] wpsdrvnt.sys
Device \Driver\Tcpip \Device\IPMULTICAST IRP_MJ_CLOSEIRP_MJ_READ [BA279480] wpsdrvnt.sys
Device \Driver\Tcpip \Device\IPMULTICAST IRP_MJ_INTERNAL_DEVICE_CONTROL [BA2795A0] wpsdrvnt.sys
Device \Driver\Tcpip \Device\IPMULTICAST IRP_MJ_SHUTDOWN [BA2795D0] wpsdrvnt.sys
Device \FileSystem\Cdfs \Cdfs IRP_MJ_DEVICE_CONTROL [A8356912] DLAIFS_M.SYS

---- Files - GMER 1.0.10 ----

File C:\RECYCLER\NPROTECT
File C:\System Volume Information\MountPointManagerRemoteDatabase
File C:\System Volume Information\tracking.log
File C:\System Volume Information\_restore{46DE8921-1D39-44D2-A9E9-64119261F211}

---- EOF - GMER 1.0.10 ----

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swatkat

Security Expert


Joined: Mar 04, 2005
Posts: 2039

MVP RootKit Detection Hosts Rootkit Experts Security Experts

PostPosted: Tue Jul 11, 2006 11:45 am    Post subject:
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Hi,
Glad to hear that you have already removed those files. And, GMER log looks clean too. The wpsdrvnt.sys driver belongs to Sygate Firewall (or Panda AV). Yes, GMER copies itself to Windows folder, it's normal!
Can you please post the Rootkit Revealer log? To minimize the false positives, please leave the PC idle when Rootkit Revealer is scanning the system. You can download the latest version here.


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- Albert Einstein
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L. D. Marks

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IP: 217.118.*.*






PostPosted: Tue Jul 11, 2006 10:31 pm    Post subject: Continued...
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I've included the rootkit revealer log below. (Note for the rootkit developers: when saving the log the Desktop link wants to go to C:\Documents and Settings\LocalService\Desktop; ignoring this it does go to the desktop. Minor bug for patching.) It looks clean to me except for some Norton protection files (probably created then deleted by rootkit revealer).

I'm still concerned about the presence of a disabled startup entry that only Netswitcher knows about. I went into regedit and did a search and found three instances of vkaloepwtj.exe:

Windows:ShellNoRoam:MUICache c:\WINDOWS\system32\vkaloepwtj.exe
Software:JWHance:NetSwitcher for Windows:...:HLM ..the same...
Windows:currentVersion:Run NetSw Disabled ..the same...

I'm inclined to backup my registry then delete these three entries. The last two look like NetSwitcher entries, the other (from what I can google) looks like some relic of the malware startup although I'm not sure and would appreciate advice.

Rootkit Revealer Log:

C:\RECYCLER\NPROTECT 7/11/2006 11:45 PM 0 bytes Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000000 7/11/2006 11:44 PM 568.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000001 7/11/2006 11:44 PM 532.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000002 7/11/2006 11:44 PM 8.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000003 7/11/2006 11:44 PM 532.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000004 7/11/2006 11:44 PM 8.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000005 7/11/2006 11:44 PM 5.05 MB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000006 7/11/2006 11:44 PM 104.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000007 7/11/2006 11:44 PM 568.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000008 7/11/2006 11:44 PM 60.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000009 7/11/2006 11:44 PM 32.00 KB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000010 7/11/2006 11:45 PM 28.55 MB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000011 7/11/2006 11:45 PM 5.65 MB Hidden from Windows API.
C:\RECYCLER\NPROTECT\00000015 7/11/2006 11:45 PM 18.70 MB Hidden from Windows API.
C:\RECYCLER\NPROTECT\NPROTECT.LOG 7/11/2006 1:46 PM 631.38 KB Hidden from Windows API.

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L. D. Marks

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IP: 129.105.*.*






PostPosted: Thu Jul 13, 2006 3:01 pm    Post subject:
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I went ahead and deleted the entries, since I needed to reconnect my laptop to my office network and did not want anything left. No apparent problems. This case can probably be closed, unless there is a good reason to deposit the rootkit files somewhere for forensic purposes.

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swatkat

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Joined: Mar 04, 2005
Posts: 2039

MVP RootKit Detection Hosts Rootkit Experts Security Experts

PostPosted: Thu Jul 13, 2006 5:56 pm    Post subject:
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Hi,
Sorry for my late reply, I was out of town and had no Internet access.
Those NPROTECT things are related to Norton, it uses "rootkit like" techniques! Looks like deleting those stray Registry solved the problem.

Quote:
Windows:ShellNoRoam:MUICache c:\WINDOWS\system32\vkaloepwtj.exe

This MUICache is created by the Explorer.exe shell when the malware file vkaloepwtj.exe was executed. This key is used to store the default file/folder views and/or such similar display settings.
Quote:
Software:JWHance:NetSwitcher for Windows:...:HLM ..the same...
Windows:currentVersion:Run NetSw Disabled ..the same...

Probably these keys were created by the NetSwitcher itself, when it disabled the startup entries of vkaloepwtj.exe.

To check if there are any Registry entries belonging to this malware, you can use RegSearch. Download RegSearch and extract it to a folder. Now run RegSearch.exe and type vkaloepwtj in the first line of the search box and click "OK". RegSearch will search the occurrences of that string in Registry. When the search is over, you will get a text file which contains the search results. Please copy and paste the results here.


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- Albert Einstein
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L. D. Marks

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PostPosted: Fri Jul 14, 2006 8:16 pm    Post subject:
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No entries found -- full log below

REGEDIT4

; Registry Search 2.0 by Bobbi Flekman © 2005
; Version: 2.0.1.0

; Results at 7/14/2006 3:07:58 PM for strings:
; 'vkaloepwtj'
; Strings excluded from search:
; (None)
; Search in:
; Registry Keys Registry Values Registry Data
; HKEY_LOCAL_MACHINE HKEY_USERS


; End Of The Log...

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swatkat

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Joined: Mar 04, 2005
Posts: 2039

MVP RootKit Detection Hosts Rootkit Experts Security Experts

PostPosted: Sun Jul 16, 2006 9:28 am    Post subject:
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Hi,

L. D. Marks wrote:
No entries found -- full log below

Good news Thumbs Up I suppose everything's fine now.


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- Albert Einstein
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L D Marks

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PostPosted: Mon Jul 17, 2006 11:26 am    Post subject:
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No apparent problems. Thanks for your help.

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