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SMSS.EXE Infected


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#1 DeaconDaren

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Posted 23 February 2010 - 04:57 PM

Running XP Pro SP3 and have an infected SMSS.EXE file as determined by MBAM software - similar problem on another computer removed the SMSS file which reqd a full re-format/re-install. Please advise how to proceed.

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#2 boopme

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Posted 23 February 2010 - 05:03 PM

So you ran MBAM on 2 PC's and on one something (what did) told you you need to reformat. What about the other and have you reformatted?
Please post the MBAM logs for each.
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. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
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#3 DeaconDaren

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Posted 24 February 2010 - 09:39 AM

Error seems to have infected 2 computers...ComputerA ("A") was scanned and I selected clean all which wiped out the SMSS file, leaving me no option but to re-format/re-install; this is my "lesson learned" computer. ComputerB ("B") is also infected but I de-selected cleaning the SMSS; the MBAM log follows.

Malwarebytes' Anti-Malware 1.44
Database version: 3781
Windows 5.1.2600 Service Pack 3
Internet Explorer 8.0.6001.18702

2/23/2010 3:01:34 PM
mbam-log-2010-02-23 (15-01-34).txt

Scan type: Quick Scan
Objects scanned: 321191
Time elapsed: 34 minute(s), 4 second(s)

Memory Processes Infected: 2
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 5
Registry Data Items Infected: 10
Folders Infected: 0
Files Infected: 13

Memory Processes Infected:
C:\WINDOWS\system32\smss32.exe (Trojan.Downloader) -> Not selected for removal.
C:\WINDOWS\System.exe (Worm.AutoRun) -> Unloaded process successfully.

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\4dw4r3 (Rootkit.TDSS) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\smss32.exe (Trojan.Downloader) -> Not selected for removal.
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\AppCertDlls\appsecdll (Spyware.Passwords) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msn messanger (Worm.AutoRun) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Desktop\General\wallpaper (Hijack.Wallpaper) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\winid (Malware.Trace) -> Quarantined and deleted successfully.

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Trojan.Downloader) -> Data: c:\windows\system32\winlogon32.exe -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Trojan.Downloader) -> Data: system32\winlogon32.exe -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit (Hijack.UserInit) -> Bad: (C:\WINDOWS\system32\winlogon32.exe) Good: (userinit.exe) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop\NoChangingWallpaper (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoActiveDesktopChanges (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoSetActiveDesktop (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\activedesktop\NoChangingWallpaper (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoActiveDesktopChanges (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoSetActiveDesktop (Hijack.DisplayProperties) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr (Hijack.TaskManager) -> Bad: (1) Good: (0) -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\smss32.exe (Trojan.Downloader) -> Not selected for removal.
C:\update.exe (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\vwqjlr.exe (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\6to4v32.dll (Backdoor.Bot) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\winlogon32.exe (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\diskmgr.sys (Rootkit.Agent) -> Quarantined and deleted successfully.
C:\Documents and Settings\dbitter\Local Settings\Temporary Internet Files\Content.IE5\PYXTVRE7\tmcvif[1].htm (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\Documents and Settings\dbitter\Local Settings\Temporary Internet Files\Content.IE5\PYXTVRE7\leoxyiissg[1].htm (Trojan.Dropper) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\helper32.dll (Trojan.FakeAlert) -> Delete on reboot.
C:\WINDOWS\System.exe (Worm.AutoRun) -> Quarantined and deleted successfully.
C:\Documents and Settings\dbitter\Local Settings\Temp\jisfije9fjoiee.tmp (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\IS15.exe (Trojan.FakeAlert) -> Delete on reboot.
C:\WINDOWS\system32\4DW4R3sv.dat (Rootkit.Agent) -> Quarantined and deleted successfully.

#4 boopme

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Posted 24 February 2010 - 02:37 PM

Hi, MBAM is detecting smss32.exe NOT, smss.exe (which runs from the same location) on the second machine. You may be dealing with a different infection or it may very well have been smss32.exe on the first but you thought it was smss.exe. Hard to tell since he already formatted. If that was the case, then it was probably something else which caused you to reformat.

The log is also showing backdoor bots and evidence of the TDSS rootkit...more likely TDL3. Let's play it safe and refer to the Malware Removal forum where the logs will be able to show more as to what is going on.


You will need to Download and Run DDS which will create a Pseudo HJT Report as part of its log..
If for some reason you cannot perform a step, move on to the next.
Please follow this guide. go and do steps 6 thru 8 ,, Preparation Guide For Use Before Using Malware Removal Tools and Requesting Help . Then go here Virus, Trojan, Spyware, and Malware Removal Logs ,click New Topic,give it a relevant Title and post that complete log.

Let me know if it went OK.
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#5 DeaconDaren

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Posted 25 February 2010 - 04:13 PM

Posting results after sending this reply. Received the following after running the GMER file:

STOP: d0000144 unknown hard error
Unknown Hard Error
Beinning dump of physical memory
Physical memory dump complete.
Contact your system administrator or technical support group for further assistance.

Will re-boot and send.

#6 Orange Blossom

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Posted 25 February 2010 - 05:06 PM

Hello,

Don't worry about the GMER log for now.

Now that you have posted a log here: http://www.bleepingcomputer.com/forums/t/298541/infection-smss/ you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a MRT Team member, nor should you ask for help elsewhere. Doing so can result in system changes which may not show in the log you already posted. Further, any modifications you make on your own may cause confusion for the helper assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

From this point on the MRT Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take a while to get a response because the MRT Team members are EXTREMELY busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT make another reply until it has been responded to by a member of the MRT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another MRT Team member is already assisting you and not open the thread to respond.

Please be patient. It may take several days to get a response but your log will be reviewed and answered as soon as possible. I advise checking your topic once a day for responses as the e-mail notification system is unreliable.

To avoid confusion, I am closing this topic. Good luck with your log.

Orange Blossom :thumbsup:
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