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Stubborn and sneaky Trojans in mshta.exe?

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3 replies to this topic

#1 frags


  • Members
  • 9 posts
  • Local time:06:24 PM

Posted 08 January 2009 - 05:00 AM

Hi All,

I am a relative newbie who has so far remained pretty bug free! However, about a week ago I viewed and d/l'd a Paramore music vid from a site whos name I don't remember. Since then I have had loads of pop-ups and trojan warnings.

I use AVG free edition, Spybot S&D, Ewido, A-squared free, Ad-aware, and Winpatrol. Here are my symptoms:-

Shortly after start up Winpatrols Scotty dog will tell me that there is a problem at A1 in mshta.exe. I close this and it instantly pops up with prob in A10, and will keep popping up, with a new and higher number value till I get sick of hitting the pop-ups and exit winpatrol.

Next I will have AVG telling me it has detected a Trojan, but it cant heal it, so I move it to the vault. This may happen 2 or 3 times.

I then notice on my WTM that I have a dozen mhsta.exe processes running all at about 12700k, and my firewall will turn itself off, or my automatic updates will turn off.

If I close down the computer and restart, the process begins again.

I have run all my anti-malware programs with varying results - some find some, others dont. None of them seem to actually clear the problem though. I am sure that my pc is infected with something because its doing things that it never has before, but I have no idea on what or how to deal with it. I've enclosed dds logs and hope that some good person out there will help me and point me in the right direction. Please be fairly simplistic with your answers as I am a relative newbie, though a quick learner.



DDS (Ver_09-01-07.01) - NTFSx86
Run by Frags at 9:27:46.34 on 08/01/2009
Internet Explorer: 7.0.5730.11
Microsoft Windows XP Home Edition 5.1.2600.3.1252.44.1033.18.1150.505 [GMT 0:00]

AV: AVG 7.5.552 *On-access scanning enabled* (Updated)

============== Running Processes ===============

C:\WINDOWS\system32\svchost -k DcomLaunch
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe -k netsvcs
C:\WINDOWS\system32\svchost.exe -k WudfServiceGroup
C:\Program Files\a-squared Free\a2service.exe
C:\Program Files\Comodo\CBOClean\BOCORE.exe
C:\Program Files\ewido anti-malware\ewidoctrl.exe
C:\WINDOWS\System32\svchost.exe -k HTTPFilter
C:\Program Files\Common Files\Protexis\License Service\PSIService.exe
C:\Program Files\Microsoft\Search Enhancement Pack\SeaPort\SeaPort.exe
C:\WINDOWS\system32\svchost.exe -k imgsvc
C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Windows Media Player\WMPNSCFG.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\DNA\btdna.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Windows Live\Toolbar\wltuser.exe
C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Frags\Desktop\dds.scr

============== Pseudo HJT Report ===============

uStart Page = hxxp://www.google.co.uk
uDefault_Page_URL = hxxp://www.dell.co.uk/myway
uSearch Page = hxxp://www.google.com
uSearch Bar = hxxp://www.google.com/ie
uSearchMigratedDefaultURL = hxxp://www.google.com/search?q={searchTerms}&sourceid=ie7&rls=com.microsoft:en-US&ie=utf8&oe=utf8
uSearchURL,(Default) = hxxp://g.msn.co.uk/0SEENGB/SAOS01?FORM=TOOLBR
uURLSearchHooks: Yahoo! Toolbar: {ef99bd32-c1fb-11d2-892f-0090271d4f88} -
BHO: Adobe PDF Reader Link Helper: {06849e9f-c8d7-4d59-b87d-784b7d6be0b3} - c:\program files\adobe\acrobat 7.0\activex\AcroIEHelper.dll
BHO: {12160035-CB58-4B22-85B2-85B26BA5658D} - No File
BHO: Spybot-S&D IE Protection: {53707962-6f74-2d53-2644-206d7942484f} - c:\progra~1\spybot~1\SDHelper.dll
BHO: Click-to-Call BHO: {5c255c8a-e604-49b4-9d64-90988571cecb} - c:\program files\windows live\messenger\wlchtc.dll
BHO: {69BDADDC-E657-4376-9AE4-6BF71DC711FF} - No File
BHO: Search Helper: {6ebf7485-159f-4bff-a14f-b9e3aac4465b} - c:\program files\microsoft\search enhancement pack\search helper\SearchHelper.dll
BHO: SSVHelper Class: {761497bb-d6f0-462c-b6eb-d4daf1d92d43} - c:\program files\java\jre1.6.0_02\bin\ssv.dll
BHO: {79165dc3-7422-4aa1-bd48-88c4607427a2} - c:\windows\system32\cbXPIbXo.dll
BHO: Windows Live Sign-in Helper: {9030d464-4c02-4abf-8ecc-5164760863c6} - c:\program files\common files\microsoft shared\windows live\WindowsLiveLogin.dll
BHO: {99EA2279-0C5B-49EA-A17F-AB64E83629D5} - No File
BHO: Google Toolbar Helper: {aa58ed58-01dd-4d91-8333-cf10577473f7} - c:\program files\google\google toolbar\GoogleToolbar.dll
BHO: Google Toolbar Notifier BHO: {af69de43-7d58-4638-b6fa-ce66b5ad205d} - c:\program files\google\googletoolbarnotifier\5.0.926.3450\swg.dll
BHO: Google Dictionary Compression sdch: {c84d72fe-e17d-4195-bb24-76c02e2e7c4e} - c:\program files\google\google toolbar\component\fastsearch_219B3E1547538286.dll
BHO: Windows Live Toolbar Helper: {e15a8dc0-8516-42a1-81ea-dc94ec1acf10} - c:\program files\windows live\toolbar\wltcore.dll
TB: EPSON Web-To-Page: {ee5d279f-081b-4404-994d-c6b60aaeba6d} - c:\program files\epson\epson web-to-page\EPSON Web-To-Page.dll
TB: &Google Toolbar: {2318c2b1-4965-11d4-9b18-009027a5cd4f} - c:\program files\google\google toolbar\GoogleToolbar.dll
TB: &Windows Live Toolbar: {21fa44ef-376d-4d53-9b0f-8a89d3229068} - c:\program files\windows live\toolbar\wltcore.dll
TB: {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - No File
TB: {DB87BFA2-A2E3-451E-8E5A-C89982D87CBF} - No File
TB: {C4069E3A-68F1-403E-B40E-20066696354B} - No File
TB: Yahoo! Toolbar: {ef99bd32-c1fb-11d2-892f-0090271d4f88} -
EB: {4528BBE0-4E08-11D5-AD55-00010333D0AD} - No File
EB: &Discuss: {bdeade7f-c265-11d0-bced-00a0c90ab50f} - shdocvw.dll
uRun: [ctfmon.exe] c:\windows\system32\ctfmon.exe
uRun: [msnmsgr] "c:\program files\windows live\messenger\msnmsgr.exe" /background
uRun: [WMPNSCFG] c:\program files\windows media player\WMPNSCFG.exe
uRun: [SpybotSD TeaTimer] c:\program files\spybot - search & destroy\TeaTimer.exe
uRun: [BitTorrent DNA] "c:\program files\dna\btdna.exe"
uRun: [swg] c:\program files\google\googletoolbarnotifier\GoogleToolbarNotifier.exe
mRun: [WinPatrol] c:\program files\billp studios\winpatrol\winpatrol.exe
mRun: [AVG7_CC] c:\progra~1\grisoft\avgfre~1\avgcc.exe /STARTUP
mRun: [ISUSScheduler] "c:\program files\common files\installshield\updateservice\issch.exe" -start
mRun: [BOC-427] c:\progra~1\comodo\cboclean\BOC427.exe
dRun: [CTFMON.EXE] c:\windows\system32\CTFMON.EXE
dRun: [AVG7_Run] c:\progra~1\grisoft\avgfre~1\avgw.exe /RUNONCE
uExplorerRun: [Msn] c:\svchost.exe
uExplorerRun: [MsnHost] c:\svchost.exe
uExplorerRun: [MsnLoad] c:\svchost.exe
uExplorerRun: [MsnConvert] c:\svchost.exe
uExplorerRun: [MsnMessendger] c:\svchost.exe
dExplorerRun: [Msn] c:\svchost.exe
dExplorerRun: [MsnHost] c:\svchost.exe
dExplorerRun: [MsnLoad] c:\svchost.exe
dExplorerRun: [MsnConvert] c:\svchost.exe
dExplorerRun: [MsnMessendger] c:\svchost.exe
IE: Add to Windows &Live Favorites - http://favorites.live.com/quickadd.aspx
IE: E&xport to Microsoft Excel - c:\progra~1\micros~2\office11\EXCEL.EXE/3000
IE: {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe
IE: {FB5F1910-F110-11d2-BB9E-00C04F795683} - c:\program files\messenger\msmsgs.exe
IE: {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - {CAFEEFAC-0016-0000-0002-ABCDEFFEDCBC} - c:\program files\java\jre1.6.0_02\bin\ssv.dll
IE: {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - {5F7B1267-94A9-47F5-98DB-E99415F33AEC} - c:\program files\windows live\writer\WriterBrowserExtension.dll
IE: {92780B25-18CC-41C8-B9BE-3C9C571A8263} - {FF059E31-CC5A-4E2E-BF3B-96E929D65503} - c:\progra~1\micros~2\office11\REFIEBAR.DLL
IE: {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - {53707962-6F74-2D53-2644-206D7942484F} - c:\progra~1\spybot~1\SDHelper.dll
Notify: efcATKEU - efcATKEU.dll
SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - c:\windows\system32\WPDShServiceObj.dll
SEH: CShellExecuteHookImpl Object: {54d9498b-cf93-414f-8984-8ce7fde0d391} - c:\program files\ewido anti-malware\shellhook.dll
SEH: Microsoft AntiMalware ShellExecuteHook: {091eb208-39dd-417d-a5dd-7e2c2d8fb9cb} - c:\progra~1\window~4\MpShHook.dll
LSA: Authentication Packages = msv1_0 c:\windows\system32\cbXPIbXo
LSA: Notification Packages = scecli scecli scecli scecli

============= SERVICES / DRIVERS ===============

R1 Avg7Core;AVG7 Kernel;c:\windows\system32\drivers\avg7core.sys [2006-11-22 821856]
R1 Avg7RsW;AVG7 Wrap Driver;c:\windows\system32\drivers\avg7rsw.sys [2006-11-22 4224]
R1 Avg7RsXP;AVG7 Resident Driver XP;c:\windows\system32\drivers\avg7rsxp.sys [2006-11-22 27776]
R1 AvgClean;AVG7 Clean Driver;c:\windows\system32\drivers\avgclean.sys [2006-11-22 10760]
R4 a2free;a-squared Free Service;c:\program files\a-squared free\a2service.exe [2008-12-26 419448]
R4 Avg7Alrt;AVG7 Alert Manager Server;c:\progra~1\grisoft\avgfre~1\avgamsvr.exe [2006-11-22 418816]
R4 Avg7UpdSvc;AVG7 Update Service;c:\progra~1\grisoft\avgfre~1\avgupsvc.exe [2006-11-22 49664]
R4 BOCore;BOCore;c:\program files\comodo\cboclean\BOCore.exe [2009-1-7 73464]
R4 ewido security suite control;ewido security suite control;c:\program files\ewido anti-malware\ewidoctrl.exe [2005-11-30 13888]
R4 fssfltr;FssFltr;c:\windows\system32\drivers\fssfltr_tdi.sys [2008-12-22 55136]
R4 SeaPort;SeaPort;c:\program files\microsoft\search enhancement pack\seaport\SeaPort.exe [2008-12-4 226640]
R4 WinDefend;Windows Defender;c:\program files\windows defender\MsMpEng.exe [2006-11-3 13592]
S3 fsssvc;Windows Live Family Safety;c:\program files\windows live\family safety\fsssvc.exe [2008-12-8 533344]
S4 ICFFKQJV;ICFFKQJV;\??\c:\windows\system32\icffkqjv.jan --> c:\windows\system32\icffkqjv.jan [?]

=============== Created Last 30 ================

2009-01-07 12:53 <DIR> --d----- c:\docume~1\alluse~1\applic~1\BOC427
2009-01-07 12:53 946 a------- c:\windows\BOC427.INI
2009-01-07 12:53 <DIR> --d----- c:\program files\Comodo
2008-12-30 16:41 22,528 a------- c:\windows\system32\wsock32.dlb
2008-12-30 16:41 205,560 a------- c:\windows\UNBOC.EXE
2008-12-30 16:41 212,728 a------- c:\windows\CMDLIC.DLL
2008-12-30 00:29 <DIR> --d----- c:\docume~1\frags\applic~1\TrojanHunter
2008-12-29 22:57 <DIR> --d----- c:\docume~1\frags\applic~1\Uniblue
2008-12-29 22:51 <DIR> --d----- c:\program files\TrojanHunter 5.0
2008-12-29 19:55 8,098 ac------ C:\bt.bat
2008-12-29 19:55 208 ac------ C:\testfile.bat
2008-12-26 00:45 <DIR> --d----- c:\program files\a-squared Free
2008-12-24 15:20 0 a------- c:\windows\system32\mcrh.tmp
2008-12-24 14:42 88,576 a------- c:\windows\system32\wjfewpiu.dll
2008-12-22 11:52 <DIR> --d----- c:\program files\SDHelper (Spybot - Search & Destroy)
2008-12-22 11:52 <DIR> --d----- c:\program files\TeaTimer (Spybot - Search & Destroy)
2008-12-22 11:52 <DIR> --d----- c:\program files\Misc. Support Library (Spybot - Search & Destroy)
2008-12-22 11:52 <DIR> --d----- c:\program files\File Scanner Library (Spybot - Search & Destroy)
2008-12-22 11:25 3,138 a------- c:\windows\system32\PerfStringBackup.TMP
2008-12-22 09:28 <DIR> --d----- c:\program files\Microsoft Office Outlook Connector
2008-12-22 09:28 55,136 a------- c:\windows\system32\drivers\fssfltr_tdi.sys
2008-12-22 09:24 <DIR> --d----- c:\program files\Windows Live SkyDrive

==================== Find3M ====================

2008-12-13 06:40 3,593,216 a------- c:\windows\system32\dllcache\mshtml.dll
2008-12-04 22:55 307,560 a------- c:\windows\WLXPGSS.SCR
2008-12-02 22:37 49,480 a------- c:\windows\system32\sirenacm.dll
2008-11-01 14:38 77,915 a------- c:\windows\pchealth\helpctr\offlinecache\index.dat
2008-10-24 11:21 455,296 -------- c:\windows\system32\dllcache\mrxsmb.sys
2008-10-23 12:36 286,720 a------- c:\windows\system32\gdi32.dll
2008-10-23 12:36 286,720 -------- c:\windows\system32\dllcache\gdi32.dll
2008-10-16 14:13 1,809,944 a------- c:\windows\system32\dllcache\wuaueng.dll
2008-10-16 14:13 202,776 a------- c:\windows\system32\dllcache\wuweb.dll
2008-10-16 14:12 323,608 a------- c:\windows\system32\dllcache\wucltui.dll
2008-10-16 14:12 561,688 a------- c:\windows\system32\dllcache\wuapi.dll
2008-10-16 14:09 92,696 a------- c:\windows\system32\dllcache\cdm.dll
2008-10-16 14:09 51,224 a------- c:\windows\system32\dllcache\wuauclt.exe
2008-10-16 14:08 34,328 a------- c:\windows\system32\dllcache\wups.dll
2008-10-16 14:06 268,648 a------- c:\windows\system32\mucltui.dll
2008-10-16 14:06 208,744 a------- c:\windows\system32\muweb.dll
2008-10-16 13:11 70,656 a------- c:\windows\system32\dllcache\ie4uinit.exe
2008-10-16 13:11 13,824 a------- c:\windows\system32\dllcache\ieudinit.exe
2008-10-15 16:34 337,408 -------- c:\windows\system32\dllcache\netapi32.dll
2008-10-15 07:06 633,632 a------- c:\windows\system32\dllcache\iexplore.exe
2008-10-15 07:04 161,792 a------- c:\windows\system32\dllcache\ieakui.dll
2008-08-20 00:13 87,608 a------- c:\docume~1\frags\applic~1\inst.exe
2008-08-20 00:13 47,360 a------- c:\docume~1\frags\applic~1\pcouffin.sys

============= FINISH: 9:28:57.89 ===============

Attached Files

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#2 Hoov


  • Malware Response Team
  • 3,519 posts
  • Location:Mikado Michigan
  • Local time:06:24 PM

Posted 22 January 2009 - 11:55 AM

Howdy, my name is Hoov, and I will be helping you with your dilemma. I appologize for the delay in getting you help.

Please make sure you watch this thread for responses. If you click the options tab at the top of your first post, you can select to track this thread.

Here is what I am asking you to do during the repair of your computer

*Tell me everything that you have done, if anything, to try and fix this problem.

*Please only use 1 forum to help clear up your problem. Posting on more than 1 and following instructions from more than 1 forum will cause those helping you to pull out thier hair.

*Follow my instructions - If you can't for some reason, or if you don't understand something, please tell me. If you deviate from my instructions, tell me, it may make a difference on where we go. Don't install anything, even other programs that have nothing to do with security or malware, it could cause things to change, and I would never know it.

*Have faith. I will do all I can to get your computer working, and if I can't - someone else here will know something else to try.

*Stick with me to the end. My aim is to fix your problems, and give you the tools and knowledge to keep this from happening again.

Now onto trying to fix your computer.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself.
  • Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install. Alternatively, you can update through MBAM's interface from a clean computer, copy the definitions (rules.ref) located in C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes' Anti-Malware from that system to a usb stick or CD and then copy it to the infected machine.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • 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 and exit MBAM.
Note: If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware. MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you after scanning with MBAM. Please temporarily disable such programs or permit them to allow the changes.
Visiting From SpywareHammer.com and DonHoover.net

Tilting at windmills hurts you more than the windmills.
-From the Notebooks of Lazarus Long
Senior of the Howard Families

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#3 frags

  • Topic Starter

  • Members
  • 9 posts
  • Local time:06:24 PM

Posted 22 January 2009 - 02:26 PM

Hi Hoov,

Thank you for your interest in my problem. My dilemna is now solved though with the help of a very nice chap in Reno.

It was certainly a sticky problem which involved a total of 9 combofix attempts, 9 hijackthis logs, superantimalware, and malwarebytes.

The basic problem was that the trojan had buried itself in system restore and start-up. Each day that I started up the pc, the Trojan and installed mshta.exe into tasks running every 15 mins from 0000-2345. To make matters worse, it used avg as a shield to hide behind, so that avg would spot it, but be unable to remove it despite saying that it had.

Anyway.....it took 9 days for the problem to get resolved, but eventually after much trial and error it was removed, and I have to thank Mjack in Reno for finally figuring it out.

Thank you for offering to help me, I'm grateful that someone took an interest,



#4 Hoov


  • Malware Response Team
  • 3,519 posts
  • Location:Mikado Michigan
  • Local time:06:24 PM

Posted 22 January 2009 - 03:12 PM

You are welcome, if you need help in the future, come on back.
Visiting From SpywareHammer.com and DonHoover.net

Tilting at windmills hurts you more than the windmills.
-From the Notebooks of Lazarus Long
Senior of the Howard Families

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