Help remove trojandownloader.win32.siboco

[Mitra32203]

Hi, I have a problem, Internet explorer keeps crashing and when i submit a report to microsoft it says that the problem was caused by trojandownloader.win32.siboco, please help me solve this problem

the following is my hijackthis log file:

Logfile of HijackThis v1.98.2
Scan saved at 4:14:00 PM, on 17/03/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\Program Files\Microsoft Hardware\Keyboard\type32.exe
C:\Program Files\NVIDIA Corporation\NvMixer\NVMixerTray.exe
C:\Program Files\Java\j2re1.4.2_06\bin\jusched.exe
C:\Program Files\Lexmark 4200 Series\lxbmbmgr.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
C:\Program Files\Silicon Image\SiISATARaid\SATARaid.exe
C:\Program Files\Lexmark 4200 Series\lxbmbmon.exe
C:\WINDOWS\explorer.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\hjt\HijackThis.exe

O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: IeCatch2 Class - {A5366673-E8CA-11D3-9CD9-0090271D075B} - C:\PROGRA~1\FlashGet\jccatch.dll
O2 - BHO: C:\WINDOWS\lbbho.dll - {DB62EC0C-47C2-419E-BB21-A7F9CB66C749} - C:\WINDOWS\lbbho.dll
O2 - BHO: LBBHO - {EFD84954-6B46-42f4-81F3-94CE9A77052D} - C:\WINDOWS\lbbho.dll
O3 - Toolbar: FlashGet Bar - {E0E899AB-F487-11D5-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\fgiebar.dll
O4 - HKLM\..\Run: [IntelliType] "C:\Program Files\Microsoft Hardware\Keyboard\type32.exe"
O4 - HKLM\..\Run: [NvMixerTray] "C:\Program Files\NVIDIA Corporation\NvMixer\NVMixerTray.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_06\bin\jusched.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Lexmark 4200 Series] "C:\Program Files\Lexmark 4200 Series\lxbmbmgr.exe"
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime
O4 - HKCU\..\Run: [Steam] "c:\program files\valve\steam\steam.exe" -silent
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - Global Startup: ATI CATALYST System Tray.lnk = C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: SATARaid.lnk = ?
O8 - Extra context menu item: Download All by FlashGet - C:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: Download using FlashGet - C:\Program Files\FlashGet\jc_link.htm
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - (no file)
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - (no file)
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\flashget.exe
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\flashget.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {39B0684F-D7BF-4743-B050-FDC3F48F7E3B} (FilePlanet Download Control Class) - http://www.fileplanet.com/fpdlmgr/ca...C_1_0_0_44.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/is...48/mcfscan.cab

[greyknight17]

Welcome to TSF.

You have an outdated version of HijackThis. Click here to get the latest version of HijackThis and run it.

Before you give us a new log here, if we gave you instructions for a fix, please do the fixes first and then post the new log with this updated version.

1. If it gives you an intro screen, just choose 'Do a system scan and save a logfile'.
2. If you don't get the intro screen, just hit Scan and then click on Save log.
3. Get HijackThis Analyzer and save it to the same folder as the hijackthis.log file. Run HijackThis Analyzer and type in y if you agree. The result.txt file will open up in Notepad. Copy the whole result.txt log and post it in the forum. We do not need the original hijackthis.log (unless we ask for it). Do not fix anything in HijackThis since they may be harmless.

Please print out or copy this page to Notepad. Make sure to work through the fixes in the exact order it is mentioned below. If there's anything that you don't understand, ask your question(s) before proceeding with the fixes. You should not have any open browsers when you are following the procedures below.

Go to My Computer->Tools/View->Folder Options->View tab and make sure that 'Show hidden files and folders' (or 'Show all files') is enabled. Also make sure that 'Display the contents of system folders' is checked. Windows XP's search feature is a little different. When you click on 'All files and folders' on the left pane, click on the 'More advanced options' at the bottom. Make sure that Search system folders, Search hidden files and folders, and Search subfolders are checked.

For the options that you checked/enabled earlier, you may uncheck them after your log is clean. If we ask you to fix a program that you use or want to keep, please post back saying that (we don't know every program that exists, so we may tell you to delete a program that we think is bad to keep).

Turn off system restore by right clicking on My Computer and go to Properties->System Restore and check the box for Turn off System Restore. Click Apply and then OK. Restart your computer. After we are finished with your log file and verified that it's clean, you may turn it back on and create a new restore point.

If you have a fast internet connection (broadband), run an online virus scan at TrendMicro. Just follow the instructions on the site to run the online scan. Otherwise, make sure your antivirus program has the latest definitions and run a full system scan.

Reboot into Safe Mode (hit F8 key until menu shows up). Make sure to close any open browsers. Run a scan in HijackThis. Check each of the following and hit 'Fix checked' (after checking them) if they still exist (make sure not to miss any):

O2 - BHO: C:\WINDOWS\lbbho.dll - {DB62EC0C-47C2-419E-BB21-A7F9CB66C749} - C:\WINDOWS\lbbho.dll
O2 - BHO: LBBHO - {EFD84954-6B46-42f4-81F3-94CE9A77052D} - C:\WINDOWS\lbbho.dll
O16 - DPF: {39B0684F-D7BF-4743-B050-FDC3F48F7E3B} (FilePlanet Download Control Class) - http://www.fileplanet.com/fpdlmgr/c...DC_1_0_0_44.cab

Delete the following Files/Folders (delete folders if no filename is specified) according to their directory (if none, just do a search for them) and delete them if they exist:

C:\WINDOWS\lbbho.dll

Reboot into Normal Mode and run new HijackThis scan. If there were some entries that didn't show up in Safe Mode, you may check and fix those that appear now in normal mode (if you do that, make sure to run a new scan again). Save the log file and run KRC HijackThis Analyzer in the same folder to get the result.txt log. Just post the contents of the result.txt file in the forum.

[Mitra32203]

ok, when i ran the TrendMicro online virus scan, it reported that i hade 15 infections of:

Java_bytever.a, java_bytever.k and java_bytever.a-1

it didn't detect trojandownloader.win32.siboco tho

i followed the rest of your instructions and deleted the entries you told me to delete and the file C:\windows\lbbho.dll

here is the HJT analyzer result file i got with the latest ver of HJT:

====================================================================
Log was analyzed using KRC HijackThis Analyzer - Updated on 3/2/05
Get updates at http://www.greyknight17.com/download.htm#programs

***Security Programs Detected***


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Logfile of HijackThis v1.99.1
Scan saved at 2:07:43 PM, on 18/03/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\Program Files\Lexmark 4200 Series\lxbmbmgr.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
C:\Program Files\Silicon Image\SiISATARaid\SATARaid.exe
C:\Program Files\Lexmark 4200 Series\lxbmbmon.exe

O4 - HKLM\..\Run: [Lexmark 4200 Series] "C:\Program Files\Lexmark 4200 Series\lxbmbmgr.exe"
O4 - HKCU\..\Run: [Steam] "c:\program files\valve\steam\steam.exe" -silent
O4 - Global Startup: ATI CATALYST System Tray.lnk = C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
O4 - Global Startup: SATARaid.lnk = ?
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_06\bin\npjpi142_06.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\j2re1.4.2_06\bin\npjpi142_06.dll
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/is...48/mcfscan.cab
O23 - Service: RadClock - Unknown owner - C:\WINDOWS\system32\RadClock.exe


End of KRC HijackThis Analyzer Log.
====================================================================

[CTSNKY]

Let's use a program to scan for any trojans that may exist. Download TDS-3. Learn how to use it here. Make sure to update it after you installed it. You can get the manual updates here. When you launch the program, it will scan your memory for running processes. This will take less than 30 seconds. Next go to System Testing on the menu and choose Full System Scan. After that's finished, post the log file by selecting everything on the top pane (select from bottom to top). If any alarms are found, it will be listed in the bottom window. Please copy and paste that here also if it applies.

[Mitra32203]

ok, here are the results of the latest version of TDS-3 scan

14:43:36 [Memory Scan] Memory scan complete.
14:43:36 [Mutex Memory Scan] Started...
14:43:38 [Mutex Memory Scan] Finished (no trojan mutexes found).
14:43:38 [Trace Scan] Started...
14:43:42 [Trace Scan] Finished.
14:43:42 [ServiceScan] Scanning for services and drivers ...
14:43:45 [ServiceScan] Scanned 306 services and drivers.
14:43:45 [File Scan] Scanning in A:\ ...
14:43:46 [File Scan] Scanned 0 files: 0 alarms in 1.046875 seconds (Avg 1. files/sec)
14:43:46 [File Scan] Scanning in C:\ ...
15:31:50 [File Scan] Scanned 93703 files: 8 alarms in 2884.203 seconds (Avg 33.49 files/sec)
15:31:50 [File Scan] Scanning in D:\ ...
15:32:01 [File Scan] Scanned 98 files: 8 alarms in 10.625 seconds (Avg 10.22 files/sec)
15:32:01 [File Scan] Scanning in E:\ ...
15:32:01 [File Scan] Scanned 0 files: 8 alarms in 0 seconds (Avg -1.#IND files/sec)
15:32:01 [Scan] Finished.



Scan Control Dumped @ 15:36:06 19-03-05
Suspicious Filename: Dual extensions
File: c:\documents and settings\shane\my documents\websrvr\cgiampinfo-0.2.3.exe

Suspicious Filename: Dual extensions
File: c:\downloads\bittorrent-3.4.2.exe

Positive identification (DLL): Adware.Toolbar.Neon.a (dll)
File: c:\hjt\backups\backup-20050318-140036-862.dll

Positive identification (DLL): Adware.Toolbar.Neon.a (dll)
File: c:\hjt\backups\backup-20050318-140036-870.dll

Suspicious Filename: Dual extensions
File: c:\oldhddstuff\downloads\mingw-2.0.0-3.exe

Suspicious Filename: Dual extensions
File: c:\oldhddstuff\downloads\bg\isc_v2[1].0.2\isc_v2.0.2.exe

Suspicious Filename: Dual extensions
File: c:\oldhddstuff\downloads\bg\winbiffv1[1].2.2\winbiffv1.2.2.exe

Suspicious Filename: Dual extensions
File: c:\program files\winamp\uninst-vis_milk.dll.exe

[kworley517]

Good job there Mitra32203...

Please post another HJT Log for us to review to ensure that you are clean.

Are you having any more problems?

[Mitra32203]

Hi Kworley517, here is my HJT log, i have had no problems since last post, and Internet explorer has not crashed either which is a good sign


Logfile of HijackThis v1.99.1
Scan saved at 4:50:02 PM, on 20/03/2005
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\LEXBCES.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\LEXPPS.EXE
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Microsoft Hardware\Keyboard\type32.exe
C:\Program Files\NVIDIA Corporation\NvMixer\NVMixerTray.exe
C:\Program Files\Java\jre1.5.0_02\bin\jusched.exe
C:\Program Files\Lexmark 4200 Series\lxbmbmgr.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
C:\Program Files\Silicon Image\SiISATARaid\SATARaid.exe
C:\Program Files\Lexmark 4200 Series\lxbmbmon.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\hjt\HijackThis.exe

O1 - Hosts: 64.91.255.87 www.dcsresearch.com
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: IeCatch2 Class - {A5366673-E8CA-11D3-9CD9-0090271D075B} - C:\PROGRA~1\FlashGet\jccatch.dll
O3 - Toolbar: FlashGet Bar - {E0E899AB-F487-11D5-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\fgiebar.dll
O4 - HKLM\..\Run: [IntelliType] "C:\Program Files\Microsoft Hardware\Keyboard\type32.exe"
O4 - HKLM\..\Run: [NvMixerTray] "C:\Program Files\NVIDIA Corporation\NvMixer\NVMixerTray.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_02\bin\jusched.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Lexmark 4200 Series] "C:\Program Files\Lexmark 4200 Series\lxbmbmgr.exe"
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime
O4 - HKCU\..\Run: [Steam] "c:\program files\valve\steam\steam.exe" -silent
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - Global Startup: ATI CATALYST System Tray.lnk = C:\Program Files\ATI Technologies\ATI.ACE\CLI.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: SATARaid.lnk = ?
O8 - Extra context menu item: Download All by FlashGet - C:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: Download using FlashGet - C:\Program Files\FlashGet\jc_link.htm
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\flashget.exe
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - C:\PROGRA~1\FlashGet\flashget.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/is...48/mcfscan.cab
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: Macromedia Licensing Service - Unknown owner - C:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - Service: RadClock - Unknown owner - C:\WINDOWS\system32\RadClock.exe

[greyknight17]

Your log is clean. If you disabled System Restore, make sure to enable it now.

To help prevent future spyware installations/infections, please read the Anti-Spyware Tutorial (http://www.greyknight17.com/spyware.htm#prevent) and use the tools provided.

Are there any problems now? If not, you should be set to go.