Dowque Trojan

Dowque malware description and removal detail
Categories:Trojan,Downloader,Hacker Tool
Also known as:

[Kaspersky]Trojan-PSW.Win32.Delf.qc,Trojan-PSW.Win32.QQPass.xc,Trojan-PSW.Win32.OnLineGames.fwg,Packed.Win32.Klone.af;
[McAfee]Generic PWS,PWS-OnlineGames.a.dldr,PWS-QQGame;
[Other]Win32/Dowque!generic,Mal/Packer,Trojan:Win32/Downque.A,Win32/Dowque.AL,TrojanDropper:Win32/Dowque.A,Troj/QQPass-JDD,Hupigon.gen83,Hupigon.gen101
Visible Symptoms:
Files in system folders:
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Jmp
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Sys
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.bak
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\ReDelBat.bat
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo.vxd
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo1.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\system42.rar
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\upsetup.exe
[%PROGRAM_FILES_COMMON%]\SyInfo.bps
[%PROGRAM_FILES_COMMON%]\system.dt2
[%SYSTEM%]\asview32.dll
[%SYSTEM%]\_rejoice81.exe
[%SYSTEM%]\_upsetup.exe
[%WINDOWS%]\rejoice81.exe
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Jmp
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Sys
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.bak
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\ReDelBat.bat
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo.vxd
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo1.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\system42.rar
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\upsetup.exe
[%PROGRAM_FILES_COMMON%]\SyInfo.bps
[%PROGRAM_FILES_COMMON%]\system.dt2
[%SYSTEM%]\asview32.dll
[%SYSTEM%]\_rejoice81.exe
[%SYSTEM%]\_upsetup.exe
[%WINDOWS%]\rejoice81.exe

In order to ensure that the Dowque is launched automatically each time the system is booted, the Dowque adds a link to its executable file in the system registry:
HKLM\Microsoft\Windows\CurrentVersion\Run
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\upsetup.exe
[%SYSTEM%]\_rejoice81.exe
[%SYSTEM%]\_upsetup.exe
[%WINDOWS%]\rejoice81.exe

Platforms / OS: Windows 95, Windows 98, Windows 98 SE, Windows NT, Windows ME, Windows 2000, Windows XP, Windows 2003, Windows Vista

Detecting Dowque:

Files:
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Jmp
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Sys
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.bak
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\ReDelBat.bat
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo.vxd
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo1.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\system42.rar
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\upsetup.exe
[%PROGRAM_FILES_COMMON%]\SyInfo.bps
[%PROGRAM_FILES_COMMON%]\system.dt2
[%SYSTEM%]\asview32.dll
[%SYSTEM%]\_rejoice81.exe
[%SYSTEM%]\_upsetup.exe
[%WINDOWS%]\rejoice81.exe
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Jmp
[%PROGRAM_FILES%]\Internet Explorer\PLUGINS\System64.Sys
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.bak
[%PROGRAM_FILES%]\Internet Explorer\romdrivers.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\ReDelBat.bat
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo.vxd
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\SysInfo1.dll
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\system42.rar
[%PROGRAM_FILES_COMMON%]\Microsoft Shared\MSInfo\upsetup.exe
[%PROGRAM_FILES_COMMON%]\SyInfo.bps
[%PROGRAM_FILES_COMMON%]\system.dt2
[%SYSTEM%]\asview32.dll
[%SYSTEM%]\_rejoice81.exe
[%SYSTEM%]\_upsetup.exe
[%WINDOWS%]\rejoice81.exe

Registry Keys:
HKEY_CLASSES_ROOT\clsid\{754fb7d8-b8fe-4810-b363-a788cd060f1f}
HKEY_CLASSES_ROOT\clsid\{0cb68ad9-ff66-3e63-636b-b693e62f6236}
HKEY_CLASSES_ROOT\clsid\{0ea66ad2-cf26-2e23-532b-b292e22f3266}
HKEY_CLASSES_ROOT\clsid\{72204f90-5cd6-41b1-bd69-62cd84c9fb24}
HKEY_CLASSES_ROOT\clsid\{7f4d1081-25fd-44f5-99c6-ff271cfb7ec2}
HKEY_CLASSES_ROOT\clsid\{90bc520c-9175-470e-94b8-10fd869d170b}
HKEY_LOCAL_MACHINE\system\currentcontrolset\services\sheellhwd
HKEY_LOCAL_MACHINE\system\currentcontrolset\services\wmi performance adapte

Registry Values:
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shellexecutehooks
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shellexecutehooks
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shellexecutehooks
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shellexecutehooks
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shellexecutehooks
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shellexecutehooks
HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\explorer\shellexecutehooks
HKEY_LOCAL_MACHINE\system\currentcontrolset\services\winmtsrv

Removing Dowque:

An up-to-date copy of ExterminateIt should detect and prevent infection from Dowque.

If you do not have ExterminateIt and you are worried that you may have infected computer, you could run trial version of ExterminateIt, or remove Dowque manually.

To completely manually remove Dowque malware from your computer, you need to delete the Windows registry keys and registry values, the files and folders associated with Dowque.

1. Use Task Manager to terminate the Dowque process.
2. Delete the original Dowque file and folders.
3. Delete the system registry key parameters
4. Update your antivirus databases or buy antivirus software and perform a full scan of the computer.

We recommends that all Internet users back up any important information on their computers, enable maximum protection from network attacks and malicious code on their computers, refrain from executing suspicious programs received from untrustworthy sources.

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ExterminateIt effectively and automatically removes Dowque from you computer and is a good solution for those who are seeking easy and effective protection for their computer from Trojan Horses, Rootkits, Backdoors, spyware, botnets, keystroke loggers, dialers and other malicious software(malware).

Download ExterminateIt! to instantly get rid of Dowque!

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