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Win32.Chisyne.F remnants. Killbox can't kill.


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#1
stroyer

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Ran Ad-Aware, SpyBot, CWShredder, TDS-3 and AVG, and a few more.

AntiVirus-program found Win32.Chisyne.F, and deleted some files. There seems to be a remnant left I can't get rid of. Have a look at the HijackThis log:

Logfile of HijackThis v1.99.1
Scan saved at 13:50:16, on 28-04-2005
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\spoolsv.exe
C:\WINDOWS\system32\CTSvcCDA.EXE
C:\WINDOWS\system32\inetsrv\inetinfo.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\PFShared\UmxCfg.exe
C:\Program Files\Common Files\PFShared\umxlu.exe
C:\WINDOWS\system32\MsPMSPSv.exe
C:\Program Files\Common Files\PFShared\UmxPol.exe
C:\Program Files\Tiny Personal Firewall\UmxAgent.exe
C:\Program Files\Tiny Personal Firewall\UmxTray.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\Program Files\Grisoft\AVG Free\avgcc.exe
C:\Program Files\Grisoft\AVG Free\avgemc.exe
C:\Program Files\Grisoft\AVG Free\avgwb.dat
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\HijackThis\HijackThis.exe

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
O1 - Hosts: 64.91.255.87 www.dcsresearch.com
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: MSEvents Object - {44240BB5-BD7D-4D49-A1AA-8AB0F3D3CB44} - C:\WINDOWS\system\vbas.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O8 - Extra context menu item: &Download with &DAP - C:\PROGRA~1\DAP\dapextie.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINDOWS\System32\msjava.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
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
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupd...b?1114452905312
O16 - DPF: {7B297BFD-85E4-4092-B2AF-16A91B2EA103} (WScanCtl Class) - http://www3.ca.com/s...nfo/webscan.cab
O16 - DPF: {D8575CE3-3432-4540-88A9-85A1325D3375} (e-Safekey) - https://netbank.dans...B/e-Safekey.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{54CAC581-7C25-4B20-9CE7-C9188DAB378A}: NameServer = 193.162.153.164 194.239.134.83
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - C:\Program Files\Common Files\Microsoft Shared\Help\hxds.dll
O20 - Winlogon Notify: PFW - C:\WINDOWS\SYSTEM32\UmxWnp.Dll
O20 - Winlogon Notify: vbas - C:\WINDOWS\system\vbas.dll
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTSvcCDA.EXE
O23 - Service: Macromedia Licensing Service - Macromedia - C:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - Service: RadClock - Unknown owner - C:\WINDOWS\system32\RadClock.exe
O23 - Service: FW Event Manager (UmxAgent) - Tiny Software, Inc. - C:\Program Files\Tiny Personal Firewall\UmxAgent.exe
O23 - Service: FW Configuration Interpreter (UmxCfg) - Tiny Software, Inc. - C:\Program Files\Common Files\PFShared\UmxCfg.exe
O23 - Service: FW Live Update (UmxLU) - Tiny Software, Inc. - C:\Program Files\Common Files\PFShared\umxlu.exe
O23 - Service: FW Policy Manager (UmxPol) - Tiny Software Inc. - C:\Program Files\Common Files\PFShared\UmxPol.exe

It's vbas.dll I try to get rid off. HijackThis tries to delete the registry entries, but its still there, when I run a second scan.

When I tag it with killBox I get the "PendingFileRenameOperations Registry Data has been Removed by External Process!" I reboot manually, but the file is still there.

One of the programs(probably killbox) has left the vbas.dll file in C:\submit!. Should I send it to someone for analysis? No Antivirus software has tagged vbas.dll as a virus.

Thanks a million in advance. :tazz:
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#2
stroyer

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Perhaps someone can tell me in general what to do, when a malicious dll is being started in winlogon...

It seems to me it can be impossible to remove?

You can't delete it, since it is running in winlogon.
You can't kill winlogon, since it crashes windows XP.
You can't tag it for delete on boot, since it controls the registry, and can remove the "PendingRename..." entrys instantly.
You can't remove it from the registry because it just puts it self back in.
You might not even be able to delete it from the disk after using a set of bootdisks, since it just might rename itself on exit from windows, and renaming it self back to its "online-name" when it has been started.

I just don't see how it can be killed... Anyone?
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#3
stroyer

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Well. Still having the vbas.dll problem... Cleared some more of my computer... Changed to firefox.

HijackThis log now look like this.

Logfile of HijackThis v1.99.1
Scan saved at 18:49:27, on 01-05-2005
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\spoolsv.exe
C:\Program Files\Common Files\PFShared\UmxCfg.exe
C:\Program Files\Common Files\PFShared\UmxPol.exe
C:\Program Files\Tiny Personal Firewall\UmxAgent.exe
C:\Program Files\Tiny Personal Firewall\UmxTray.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\WINDOWS\system32\CTSvcCDA.EXE
C:\WINDOWS\system32\inetsrv\inetinfo.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\PFShared\umxlu.exe
C:\WINDOWS\system32\MsPMSPSv.exe
C:\Program Files\Common Files\Microsoft Shared\DirectX Extensions\DXDebugService.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\system32\ntvdm.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\HijackThis\HijackThis.exe

O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: MSEvents Object - {44240BB5-BD7D-4D49-A1AA-8AB0F3D3CB44} - C:\WINDOWS\system\vbas.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Program Files\Spybot - Search & Destroy\SDHelper.dll
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [AMonitor] C:\Program Files\Tiny Personal Firewall\amon.exe
O8 - Extra context menu item: &Download with &DAP - C:\PROGRA~1\DAP\dapextie.htm
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupd...b?1114452905312
O16 - DPF: {7B297BFD-85E4-4092-B2AF-16A91B2EA103} (WScanCtl Class) - http://www3.ca.com/s...nfo/webscan.cab
O16 - DPF: {D8575CE3-3432-4540-88A9-85A1325D3375} (e-Safekey) - https://netbank.dans...B/e-Safekey.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{54CAC581-7C25-4B20-9CE7-C9188DAB378A}: NameServer = 193.162.153.164 194.239.134.83
O20 - Winlogon Notify: PFW - C:\WINDOWS\SYSTEM32\UmxWnp.Dll
O20 - Winlogon Notify: vbas - C:\WINDOWS\system\vbas.dll
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTSvcCDA.EXE
O23 - Service: Macromedia Licensing Service - Macromedia - C:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - Service: RadClock - Unknown owner - C:\WINDOWS\system32\RadClock.exe
O23 - Service: FW Event Manager (UmxAgent) - Tiny Software, Inc. - C:\Program Files\Tiny Personal Firewall\UmxAgent.exe
O23 - Service: FW Configuration Interpreter (UmxCfg) - Tiny Software, Inc. - C:\Program Files\Common Files\PFShared\UmxCfg.exe
O23 - Service: FW Live Update (UmxLU) - Tiny Software, Inc. - C:\Program Files\Common Files\PFShared\umxlu.exe
O23 - Service: FW Policy Manager (UmxPol) - Tiny Software Inc. - C:\Program Files\Common Files\PFShared\UmxPol.exe
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#4
stroyer

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I GOT IT. :tazz:

It was the Trojan.Vundo.B. Symantec had a tool for killing it.
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