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Infected By Spambot


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4 replies to this topic

#1 n4styb0y

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Posted 22 April 2008 - 09:34 PM

Dear all,

My computer (O/S Windows XP Pro SP 2) infected by spambot. it broadcast unwanted messages through my office mailserver and the ip address is listing in SpamCop blocking list. I have scanned the computer using "SpyBot 1.5.2 Search & Destroy" and "Spyware Terminator" still can not stop the spamBOT from spreading unwanted messages.

could anybody give me an enlightment how to get rid the spambot from my computer?

many thanks in advance

regards,
n4styb0y

Edited by boopme, 22 April 2008 - 09:45 PM.
Moved to proper forum~~boopme


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#2 quietman7

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Posted 23 April 2008 - 08:33 AM

What type of anti-virus are you using? Have you tried doing your scans in "Safe Mode"?

If your anti-virus did not find anything, its probably because Spam Bots and Email relays typically come packaged with rootkits.

Please print out and follow the instructions for using SDFix in BC's self-help tutorial "How to use SDFix".
-- 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 and any anti-malware real time protection 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. 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.

Please download AVG Anti-Rootkit and save to your desktop
  • Double click avgarkt-setup-1.1.0.42.exe to begin installation.
  • Click Next to select the Normal interface.
  • Accept the license and follow the prompts to install. (By default it will install to C:\Program Files\GRISOFT\AVG Anti-Rootkit)
  • You will be asked to reboot to finish the installation so click "Finish".
  • After rebooting, double-click the icon for AVG Anti-Rootkit on your desktop.
  • You will see a window with three buttons at the bottom.
  • Click "Search For Rootkits" and the scan will begin.
  • You will see the progress bar moving from left to right. The scan will take some so be patient and let it finish.
  • When the scan has finished, if anything was found, click "Remove selected items"
  • If nothing is found, a message will appear "Congratulations! There were no installed rootkits found on your computer."
  • Click close, then select "Perform in-depth Search".
  • When the scan has finished, if anything is found, click "Remove selected items"
  • Again, if nothing was found, you will see the message "Congratulations! There were no installed rootkits found on your computer."
  • Exit AVG ARK.
Note: Before performing a scan it is recommended to do the following to ensure more accurate results and avoid common issues that may cause false detections.
  • Disconnect from the Internet or physically unplug you Internet cable connection.
  • Close all open programs, scheduling/updating tasks and background processes that might activate during the scan including the screensaver.
  • Temporarily disable your anti-virus and real-time anti-spyware protection. (Re-enable when done)
  • After starting the scan, DO NOT not use the computer until the scan has completed.

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#3 n4styb0y

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Posted 24 April 2008 - 03:24 AM

Here is the report of SDFix:


SDFix: Version 1.173
Run by LUTFI on Thu 04/24/2008 at 09:41 AM

Microsoft Windows XP [Version 5.1.2600]
Running From: C:\SDFix

Checking Services :


Restoring Windows Registry Values
Restoring Windows Default Hosts File

Rebooting


Checking Files :

Trojan Files Found:

C:\33.TMP - Deleted
C:\34.TMP - Deleted
C:\35.TMP - Deleted
C:\36.TMP - Deleted





Removing Temp Files

ADS Check :



Final Check :

catchme 0.3.1353.2 W2K/XP/Vista - rootkit/stealth malware detector by Gmer, http://www.gmer.net
Rootkit scan 2008-04-24 09:48:21
Windows 5.1.2600 Service Pack 2 NTFS

scanning hidden processes ...

scanning hidden services & system hive ...

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Ynbt41]
"Type"=dword:00000001
"Tag"=dword:00000001
"Group"="System Reserved\0Boot Bus Extender\0System Bus Extender\0SCSI miniport\0Port\0Primary Disk\0SCSI Class\0SCSI CDROM Class\0FSFilter Infrastructure\0FSFilter System\0FSFilter Bottom\0FSFilter Copy Protection\0FSFilter Security Enhancer\0FSFilter Open File\0FSFilter Physical Quota Management\0FSFilter Encryption\0FSFilter Compression\0FSFilter HSM\0FSFilter Cluster File System\0FSFilter System Recovery\0FSFilter Quota Management\0FSFilter Content Screener\0FSFilter Continuous Backup\0FSFilter Replication\0FSFilter Anti-Virus\0FSFilter Undelete\0FSFilter Activity Monitor\0FSFilter Top\0Filter\0Boot File System\0Base\0Pointer Port\0Keyboard Port\0Pointer Class\0Keyboard Class\0Video Init\0Video\0Video Save\0File System\0Event Log\0Streams Drivers\0NDIS Wrapper\0COM Infrastructure\0UIGroup\0LocalValidation\0PlugPlay\0PNP_TDI\0NDIS\0TDI\0NetBIOSGroup\0ShellSvcGroup\0SchedulerGroup\0SpoolerGroup\0AudioGroup\0SmartCardGroup\0NetworkProvider\0RemoteValidation\0NetDDEGroup\0Parallel arbitrator\0Extended Base\0PCI Configuration\0MS Transactions\0"
"ErrorControl"=dword:00000001
"Start"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\Ynbt41]
"Type"=dword:00000001
"Tag"=dword:00000001
"Group"="System Reserved\0Boot Bus Extender\0System Bus Extender\0SCSI miniport\0Port\0Primary Disk\0SCSI Class\0SCSI CDROM Class\0FSFilter Infrastructure\0FSFilter System\0FSFilter Bottom\0FSFilter Copy Protection\0FSFilter Security Enhancer\0FSFilter Open File\0FSFilter Physical Quota Management\0FSFilter Encryption\0FSFilter Compression\0FSFilter HSM\0FSFilter Cluster File System\0FSFilter System Recovery\0FSFilter Quota Management\0FSFilter Content Screener\0FSFilter Continuous Backup\0FSFilter Replication\0FSFilter Anti-Virus\0FSFilter Undelete\0FSFilter Activity Monitor\0FSFilter Top\0Filter\0Boot File System\0Base\0Pointer Port\0Keyboard Port\0Pointer Class\0Keyboard Class\0Video Init\0Video\0Video Save\0File System\0Event Log\0Streams Drivers\0NDIS Wrapper\0COM Infrastructure\0UIGroup\0LocalValidation\0PlugPlay\0PNP_TDI\0NDIS\0TDI\0NetBIOSGroup\0ShellSvcGroup\0SchedulerGroup\0SpoolerGroup\0AudioGroup\0SmartCardGroup\0NetworkProvider\0RemoteValidation\0NetDDEGroup\0Parallel arbitrator\0Extended Base\0PCI Configuration\0MS Transactions\0"
"ErrorControl"=dword:00000001
"Start"=dword:00000000

scanning hidden registry entries ...

scanning hidden files ...

C:\WINDOWS\system32\drivers\Ynbt41.sys 167936 bytes executable
C:\WINDOWS\Temp\TMP000000073A0D7816888575E3

scan completed successfully
hidden processes: 0
hidden services: 1
hidden files: 2


Remaining Services :




Authorized Application Key Export:

[HKEY_LOCAL_MACHINE\system\currentcontrolset\services\sharedaccess\parameters\firewallpolicy\standardprofile\authorizedapplications\list]
"%windir%\\system32\\sessmgr.exe"="%windir%\\system32\\sessmgr.exe:*:enabled:@xpsp2res.dll,-22019"
"C:\\Program Files\\McAfee\\Common Framework\\FrameworkService.exe"="C:\\Program Files\\McAfee\\Common Framework\\FrameworkService.exe:*:Enabled:McAfee Framework Service"
"C:\\Program Files\\Microsoft Office\\Office12\\OUTLOOK.EXE"="C:\\Program Files\\Microsoft Office\\Office12\\OUTLOOK.EXE:*:Enabled:Microsoft Office Outlook"
"C:\\Program Files\\Microsoft Office\\Office12\\GROOVE.EXE"="C:\\Program Files\\Microsoft Office\\Office12\\GROOVE.EXE:*:Enabled:Microsoft Office Groove"
"C:\\Program Files\\Microsoft Office\\Office12\\ONENOTE.EXE"="C:\\Program Files\\Microsoft Office\\Office12\\ONENOTE.EXE:*:Enabled:Microsoft Office OneNote"
"C:\\Program Files\\Huawei technologies\\Huawei E620 Data Card\\HUAWEI 3G Data Card.exe"="C:\\Program Files\\Huawei technologies\\Huawei E620 Data Card\\HUAWEI 3G Data Card.exe:*:Enabled:HUAWEI 3G Data Card"
"C:\\Program Files\\Yahoo!\\Messenger\\YahooMessenger.exe"="C:\\Program Files\\Yahoo!\\Messenger\\YahooMessenger.exe:*:Enabled:Yahoo! Messenger"

[HKEY_LOCAL_MACHINE\system\currentcontrolset\services\sharedaccess\parameters\firewallpolicy\domainprofile\authorizedapplications\list]
"%windir%\\system32\\sessmgr.exe"="%windir%\\system32\\sessmgr.exe:*:enabled:@xpsp2res.dll,-22019"
"C:\\Program Files\\Microsoft Office\\Office12\\OUTLOOK.EXE"="C:\\Program Files\\Microsoft Office\\Office12\\OUTLOOK.EXE:*:Disabled:Microsoft Office Outlook"
"C:\\Program Files\\Yahoo!\\Messenger\\YahooMessenger.exe"="C:\\Program Files\\Yahoo!\\Messenger\\YahooMessenger.exe:*:Enabled:Yahoo! Messenger"
"\\\\Regina\\Lutfi\\lutfi.exe"="\\\\Regina\\Lutfi\\lutfi.exe:*:Enabled:lutfi"
"C:\\Program Files\\Yahoo!\\Messenger\\YServer.exe"="C:\\Program Files\\Yahoo!\\Messenger\\YServer.exe:*:Disabled:Yahoo! FT Server"

Remaining Files :


File Backups: - C:\SDFix\backups\backups.zip

Files with Hidden Attributes :

Mon 28 Jan 2008 1,404,240 A.SHR --- "C:\Program Files\Spybot - Search & Destroy\SDUpdate.exe"
Mon 28 Jan 2008 5,146,448 A.SHR --- "C:\Program Files\Spybot - Search & Destroy\SpybotSD.exe"
Mon 28 Jan 2008 2,097,488 A.SHR --- "C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe"
Tue 17 Oct 2006 304,736 A..H. --- "C:\Program Files\Canon\MP Navigator 3.0\Maint.exe"
Tue 17 Oct 2006 61,440 A..H. --- "C:\Program Files\Canon\MP Navigator 3.0\uinstrsc.dll"
Sat 25 Aug 2007 0 A.SH. --- "C:\Documents and Settings\All Users\DRM\Cache\Indiv01.tmp"
Wed 4 Oct 2006 3,072,000 A..H. --- "C:\Documents and Settings\LUTFI.ASIAENERGY\Application Data\U3\temp\Launchpad Removal.exe"

Finished!

=========================================================================

I also did the scanning with ARK twice ( fast and deep scan), found nothing.
But, when I monitoring the traffic, still there are traffic spreading to port 25 from my local ip address.
it's mean the spam has not stop yet.
any suggestion?

Many thanks in advance,
N4sty

#4 quietman7

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Posted 24 April 2008 - 07:36 AM

There are no shortcuts or guarantees when it comes to malware removal. Sometimes it takes several efforts with different tools to do the job. Even then, with some types of malware infections, the task can be arduous.

There are some entries in your log (Ynbt41.sys, TMP000000073A0D7816888575E3) that are of concern and probably more malware than we are finding here. This issue will require further investigation and probably the use of more powerful tools than we recommend in this forum. Before that can be done you will need you to create and post a hijackthis log.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log" and complete all the steps. There are instructions for downloading and running Deckard's System Scanner (DSS) which will create a hijackthis log for you, or automatically download and install the most current version of HijackThis if it's not already installed on your computer.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very 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 "bump" your post or make another reply until it has been responded to by a member of the HJT 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 HJT Team member is already assisting you and not open the thread to respond.
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#5 Orange Blossom

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Posted 25 April 2008 - 11:33 PM

Now that you have posted your HiJack This log here, http://www.bleepingcomputer.com/forums/t/143651/am-i-infected-by-spambot/ 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 HJT Team member, nor should you continue to 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 HJT 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 HJT 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 HJT 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 HJT Team member is already assisting you and not open the thread to respond.

If after 5 days you still have received no response, then post a link to your HJT log in the thread titled "Haven't Had A Reply In Five Days?".

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

Orange Blossom :thumbsup:
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