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cdosy.dll trojan horse bho.0


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14 replies to this topic

#1 Leg

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Posted 18 November 2008 - 12:43 PM

AVG resident shield alert shows i am infected with cdosy.dll

malware can not delete although it finds it

Have tried for two days now to remove with no sucess

please advise

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#2 Budapest

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Posted 18 November 2008 - 04:18 PM

Please download ATF Cleaner by Atribune & save it to your desktop. alternate download link DO NOT use yet.
Please download and install SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here and unzip into the program's folder.)
  • Under the "Configuration and Preferences", click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen and exit the program.
  • Do not run a scan just yet.
Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Double-click ATF-Cleaner.exe to run the program.
  • Under Main "Select Files to Delete" choose: Select All.
  • Click the Empty Selected button.
  • If you use Firefox browser click Firefox at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • If you use Opera browser click Opera at the top and choose: Select All
  • Click the Empty Selected button.
    If you would like to keep your saved passwords, please click No at the prompt.
  • Click Exit on the Main menu to close the program.
Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

Scan with SUPERAntiSpyware as follows:
  • Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.

The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#3 Leg

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Posted 18 November 2008 - 09:16 PM

Ran into a snag. Windows installer does not work. Get the Windows installer may not be correctly installed window.

Have tried to reinstall. ave tried all the Microsoft help that I could find.

Have the files downloaded that you suggest but can go no further!

#4 Budapest

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Posted 18 November 2008 - 09:49 PM

Try this scan:

http://www.bleepingcomputer.com/forums/t/131299/how-to-use-sdfix/
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#5 Leg

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Posted 19 November 2008 - 08:38 PM

First off Thanks for your assistance in this

Have done everything that you have suggested in both your repies.

Still have the same virus

The AVG Resident Shield Alert still pops up saint THreat Detected:
File Name" d:\windows\system320cdosy.dll
Threat name: Trojan horse BH0.x
Detected in open

Requested logfile follows{

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 11/19/2008 at 06:18 PM

Application Version : 4.22.1014

Core Rules Database Version : 3643
Trace Rules Database Version: 1626

Scan type : Quick Scan
Total Scan Time : 04:07:09

Memory items scanned : 154
Memory threats detected : 0
Registry items scanned : 394
Registry threats detected : 20
File items scanned : 195201
File threats detected : 3

Adware.Vundo Variant
HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{32c620d6-cc10-4e6a-9715-bacacd5b0e61}
HKU\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{32c620d6-cc10-4e6a-9715-bacacd5b0e61}

Unclassified.Unknown Origin
HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{c5bf49a2-94f3-42bd-f434-3604812c897d}
HKU\S-1-5-18\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{c5bf49a2-94f3-42bd-f434-3604812c897d}

Trojan.DNSChanger-Codec
HKLM\Software\6
HKLM\Software\6#31AC70412E939D72A9234CDEBB1AF5867B
HKLM\Software\6#31897356954C2CD3D41B221E3F24F99BBA
HKLM\Software\6#31C2E1E4D78E6A11B88DFA803456A1FFA5
HKLM\Software\7
HKLM\Software\7#31AC70412E939D72A9234CDEBB1AF5867B
HKLM\Software\7#31897356954C2CD3D41B221E3F24F99BBA
HKLM\Software\7#31C2E1E4D78E6A11B88DFA803456A1FFA5
HKLM\Software\8
HKLM\Software\8#31AC70412E939D72A9234CDEBB1AF5867B
HKLM\Software\8#31897356954C2CD3D41B221E3F24F99BBA
HKLM\Software\8#31C2E1E4D78E6A11B88DFA803456A1FFA5
HKLM\Software\9
HKLM\Software\9#31AC70412E939D72A9234CDEBB1AF5867B
HKLM\Software\9#31897356954C2CD3D41B221E3F24F99BBA
HKLM\Software\9#31C2E1E4D78E6A11B88DFA803456A1FFA5

Adware.Tracking Cookie
C:\Documents and Settings\Stephen L. Gibbs\Cookies\stephen l. gibbs@ads.gorillanation[1].txt
C:\Documents and Settings\Stephen L. Gibbs\Cookies\stephen l. gibbs@mediamgr.ugo[1].txt
D:\Recovered Files\Documents and Settings\Steve Gibbs\Cookies\steve gibbs@sdc.krollontrack[2].txt

#6 Budapest

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Posted 19 November 2008 - 08:42 PM

Try running a scan with AVG in Safe Mode.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#7 Leg

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Posted 20 November 2008 - 06:28 PM

I'm at the point that I want to open the drive and scrape this file off with a knife.

Ran AVG in safe mode, normal and once again in safe mode. Each time the program says it found the virus and sent it to file vault.

Then lo and behold there it still is. OK BACK TO BUSINESS.

I have pasted these two logs for your attention:

Malwarebytes' Anti-Malware 1.30
Database version: 1406
Windows 5.1.2600 Service Pack 3

11/20/2008 11:41:57 AM
mbam-log-2008-11-20 (11-41-57).txt

Scan type: Quick Scan
Objects scanned: 49062
Time elapsed: 7 minute(s), 14 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 3
Registry Values Infected: 4
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{450808a3-fee8-46c0-bd78-1c0872a9628f} (Trojan.BHO.H) -> Delete on reboot.
HKEY_CLASSES_ROOT\CLSID\{450808a3-fee8-46c0-bd78-1c0872a9628f} (Trojan.BHO.H) -> Delete on reboot.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{450808a3-fee8-46c0-bd78-1c0872a9628f} (Trojan.BHO) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bf (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\bk (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\iu (Trojan.Agent) -> Delete on reboot.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Settings\mu (Trojan.Agent) -> Delete on reboot.

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
D:\WINDOWS\system32\cdosy.dll (Trojan.BHO.H) -> Delete on reboot.
AVG 8.0 Anti-Virus command line scanner
Copyright © 1992 - 2008 AVG Technologies
Program version 8.0.145, engine 8.0.0
Virus Database: Version 270.9.8/1801 2008-11-20

HKU\S-1-5-21-789336058-308236825-682003330-1004\Software\Microsoft\Internet Explorer\Extensions\CmdMapping\\{c95fe080-8f5d-11d2-a20b-00aa003c157a} Found Adware.Generic
D:\Documents and Settings\All Users\Application Data\Symantec\SRTSP\Quarantine\ Locked file. Not tested.
D:\Documents and Settings\NetworkService\Local Settings\Application Data\Microsoft\Windows\UsrClass.dat Locked file. Not tested.
D:\Documents and Settings\NetworkService\Local Settings\Application Data\Microsoft\Windows\UsrClass.dat.LOG Locked file. Not tested.
D:\Documents and Settings\NetworkService\NTUSER.DAT Locked file. Not tested.
D:\Documents and Settings\NetworkService\ntuser.dat.LOG Locked file. Not tested.
D:\Documents and Settings\Stephen L. GIbbs\Local Settings\Application Data\Microsoft\Windows\UsrClass.dat Locked file. Not tested.
D:\Documents and Settings\Stephen L. GIbbs\Local Settings\Application Data\Microsoft\Windows\UsrClass.dat.LOG Locked file. Not tested.
D:\Documents and Settings\Stephen L. GIbbs\NTUSER.DAT Locked file. Not tested.
D:\Documents and Settings\Stephen L. GIbbs\ntuser.dat.LOG Locked file. Not tested.
D:\pagefile.sys Locked file. Not tested.
D:\System Volume Information\ Locked file. Not tested.
D:\WINDOWS\system32\cdosy.dll Trojan horse BHO.X Object was moved to Virus Vault.
D:\WINDOWS\system32\config\default Locked file. Not tested.
D:\WINDOWS\system32\config\default.LOG Locked file. Not tested.
D:\WINDOWS\system32\config\SAM Locked file. Not tested.
D:\WINDOWS\system32\config\SAM.LOG Locked file. Not tested.
D:\WINDOWS\system32\config\SECURITY Locked file. Not tested.
D:\WINDOWS\system32\config\SECURITY.LOG Locked file. Not tested.
D:\WINDOWS\system32\config\software Locked file. Not tested.
D:\WINDOWS\system32\config\software.LOG Locked file. Not tested.
D:\WINDOWS\system32\config\system Locked file. Not tested.
D:\WINDOWS\system32\config\system.LOG Locked file. Not tested.
D:\WINDOWS\Temp\pvllafih.dat Locked file. Not tested.
E:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys\203dbe0d2615a9d9d8c9ad8cc2a70995_8d8f70ac-9bcb-45f4-be17-05d1b341b607 Locked file. Not tested.
E:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys\5ad7fd356766aaf8b4258edc52487164_8d8f70ac-9bcb-45f4-be17-05d1b341b607 Locked file. Not tested.
E:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys\80aef867119e4d12040810cb3d6ae826_8d8f70ac-9bcb-45f4-be17-05d1b341b607 Locked file. Not tested.
E:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys\8df7497d74ddbd8494058895ce35e19a_8d8f70ac-9bcb-45f4-be17-05d1b341b607 Locked file. Not tested.
E:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys\96b65cda87d8403d588638175dee34ed_8d8f70ac-9bcb-45f4-be17-05d1b341b607 Locked file. Not tested.
E:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys\e8304df2e6cbafd200b6a26a77d367f0_8d8f70ac-9bcb-45f4-be17-05d1b341b607 Locked file. Not tested.
E:\Documents and Settings\All Users\Application Data\Microsoft\Dr Watson\user.dmp Locked file. Not tested.
E:\System Volume Information\ Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\callcont.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\gdi32.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\h323.tsp Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\h323msp.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\helpctr.exe Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\ipnathlp.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\lsasrv.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\mf3216.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\msasn1.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\msgina.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\mst120.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\netapi32.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\nmcom.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\rtcdll.dll Locked file. Not tested.
E:\WINDOWS\$NtUninstallKB835732$\schannel.dll Locked file. Not tested.

------------------------------------------------------------
Objects scanned : 773965
Found infections : 1
Found PUPs : 0
Healed infections : 1
Healed PUPs : 0
Warnings : 1
------------------------------------------------------------



Is it time to get out the screwdriver and knife?????

#8 Budapest

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Posted 20 November 2008 - 06:42 PM

Did you run the SDFix scan?
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#9 Leg

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Posted 20 November 2008 - 10:23 PM

yes, multible times.

Same results or lack there of

#10 Budapest

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Posted 20 November 2008 - 10:39 PM

Before we start fixing anything you should print out these instructions or copy them to a NotePad file so they will be accessible. Some steps will require you to disconnect from the Internet or use Safe Mode and you will not have access to this page.

Please download DrWeb-CureIt and save it to your desktop. DO NOT perform a scan yet.

Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Scan with Dr.Web CureIt as follows:
  • Double-click on launch.exe to open the program and click Start. (There is no need to update if you just downloaded the most current version
  • Read the Virus check by DrWeb scanner prompt and click Ok where asked to Start scan now? Allow the setup.exe to load if asked by any of your security programs.
  • The Express scan will automatically begin.
    (This is a short scan of files currently running in memory, boot sectors, and targeted folders).
  • If prompted to dowload the Full version Free Trial, ignore and click the X to close the window.
  • If an infected object is found, you will be prompted to move anything that cannot be cured. Click Yes to All.
  • When complete, click Select All, then choose Cure > Move incurable.
    (This will move any detected files to the C:\Documents and Settings\userprofile\DoctorWeb\Quarantine folder if they can't be cured)
  • Now put a check next to Complete scan to scan all local disks and removable media.
  • In the top menu, click Settings > Change settings, and UNcheck "Heuristic analysis" under the "Scanning" tab, then click Ok.
  • Back at the main window, click the green arrow "Start Scanning" button on the right under the Dr.Web logo.
  • When the scan is complete, a message will be displayed at the bottom indicating if any viruses were found.
  • Click "Yes to all" if asked to cure or move the file(s) and select "Move incurable".
  • In the top menu, click file and choose save report list.
  • Save the DrWeb.csv report to your desktop.
  • Exit Dr.Web Cureit when done.
  • Important! Reboot your computer because it could be possible that files in use will be moved/deleted during reboot.
  • After reboot, post the contents of the log from Dr.Web in your next reply. (You can use Notepad to open the DrWeb.cvs report)

The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#11 Leg

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Posted 24 November 2008 - 08:55 AM

Dr Web finally finished sometime last night. Will hit it fast and furious this morning to see what transpired. Was out of pocket for awhile but am ready to get this problem done with.

Once again thanks for the help.

#12 Leg

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Posted 25 November 2008 - 12:28 PM

this last attempt has seemed to work.at least avg is not reporting it anymore.

The only ting that bothers me is CDOSY.DLL still shows up in the system32 folder.

Oh well, thanks for all your help

#13 Budapest

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Posted 25 November 2008 - 04:32 PM

Upload the CDOSY.DLL file at Jotti for analysis.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw

#14 Leg

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Posted 25 November 2008 - 09:15 PM

OK uploaded cdosy.dll. Only one of the scans found a problem so they figured it wa a false positive.

Anyway, AVG no longer finds a problem and shows no errors. Malaware and spybot s and d do not find a problem with it either. I'm going to move on to bigger and better things and I have enjoyed your help on this.

Call it good!!

Thanks

#15 Budapest

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Posted 25 November 2008 - 09:18 PM

If you’re clean, you should create a new Restore Point to prevent possible re-infection from an old one.

Go Start > Programs > Accessories > System Tools and click System Restore. Choose the radio button marked Create a Restore Point on the first screen then click Next. Give the Restore Point a name and then click Create. Then use Disk Cleanup to remove all but the most recently created Restore Point. Go Start > Run and type: "Cleanmgr" (without the quotes). Click Ok > More Options tab > Clean Up in the System Restore section to remove all previous restore points except the newly created one.

Also, go Start > Control Panel and double-click Add or Remove Programs. Post back and report any Java entries that you have.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw




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