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Trojan.Click2.53022

Added to the Dr.Web virus database: 2013-03-26

Virus description added: 2013-04-07

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'IEXPIORE.exe' = '%TEMP%\IEXPIORE.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,<Drive name for removable media>:\FlySoft\micsoft.exe'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\StormService] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\mfc43] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\krnlhelp] 'Start' = '00000002'

Malicious functions:

Creates and executes the following:

%WINDIR%\mfc43.exe
%TEMP%\starm.exe
%WINDIR%\sacssmor\Thunder5.exe
%TEMP%\internet.exe
%WINDIR%\system\lass32.exe
%PROGRAM_FILES%\MSBuild\qsrtsvxw.exe lnk nothing
<SYSTEM32>\internet.exe
%PROGRAM_FILES%\Internet Explorer\Funshon.exe
<SYSTEM32>\krnlhelp.exe
%TEMP%\small.exe
%TEMP%\GoogleTools.exe
%TEMP%\conome.exe
%TEMP%\IExplorer.exe
<SYSTEM32>\micsoft.exe
%TEMP%\IEXPIORE.exe
%TEMP%\VStart.exe
%TEMP%\fdoud01.exe

Executes the following:

%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE http://www.pp##pp.cn/fd/data/user.asp?us################################################################
<SYSTEM32>\net1.exe stop sharedaccess
<SYSTEM32>\at.exe /delete /yes
%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE http://www.ku##5.com/#27062
%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE http://www.51##b.com
<SYSTEM32>\cmd.exe /c afc9fe2f418b00a0.bat
<SYSTEM32>\rundll32.exe fly100.dll , InstallMyDll
<SYSTEM32>\cmd.exe /c %WINDIR%\system\75.90884.bat
<SYSTEM32>\ping.exe 127.1
<SYSTEM32>\net.exe stop sharedaccess

Injects code into

the following system processes:

<SYSTEM32>\svchost.exe

Modifies settings of Windows Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoInternetIcon' = '00000001'

Sets a new unauthorized home page for Windows Internet Explorer.

Modifies file system :

Creates the following files:

%APPDATA%\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk
%HOMEPATH%\Desktop\Internet Explorer.lnk
%HOMEPATH%\Start Menu\Internet Explorer.lnk
<SYSTEM32>\urlmor.dll
%PROGRAM_FILES%\MSBuild\qsrtsvxw.exe
%PROGRAM_FILES%\Internet Explorer\Funshon.exe
%PROGRAM_FILES%\Internet Explorer\3.ho
%PROGRAM_FILES%\Internet Explorer\1.ho
%WINDIR%\system\lass32.exe
%ALLUSERSPROFILE%\Start Menu\Internet Explorer.lnk
<SYSTEM32>\Web.ini
%HOMEPATH%\Desktop\7k7kРЎУОП·.lnk
%WINDIR%\WinBaDaoSe.ini
%WINDIR%\WinAdmin.ini
%HOMEPATH%\Favorites\РЎУОП·,ФЪПЯРЎУОП·,Л«ИЛРЎУОП·,7k7kРЎУОП·.url
%ALLUSERSPROFILE%\Start Menu\Programs\Internet Explorer.lnk
%HOMEPATH%\Start Menu\Programs\Internet Explorer.lnk
%HOMEPATH%\Favorites\їб256НшЦ·ґуИ«--ВМЙ«НшЦ·--ЦР№ъЧоЧЁТµµДНшЦ·µјєЅ.url
%HOMEPATH%\Favorites\ґґТµЧКС¶јУГЛЈ[ґґТµЧКС¶-ЦР№ъґґТµГЕ»§НшХѕ].url
%WINDIR%\system\75.90884.bat
<SYSTEM32>\fly100.dll
%TEMP%\VStart.exe
%TEMP%\IEXPIORE.exe
<SYSTEM32>\dllcache\fly100.dll
%TEMP%\conome.exe
%TEMP%\GoogleTools.exe
%TEMP%\IExplorer.exe
%TEMP%\small.exe
%TEMP%\fdoud01.exe
<SYSTEM32>\micsoft.exe
%WINDIR%\mfc43.exe
%TEMP%\starm.exe
%TEMP%\3596799a1543bc9f.aqq
<SYSTEM32>\internet.exe
%TEMP%\afc9fe2f418b00a0.bat
%WINDIR%\sacssmor\Thunder5.exe
<SYSTEM32>\krnlhelp.exe
%TEMP%\internet.exe

Sets the 'hidden' attribute to the following files:

%PROGRAM_FILES%\MSBuild\qsrtsvxw.exe
%TEMP%\IEXPIORE.exe
<SYSTEM32>\internet.exe

Deletes the following files:

%APPDATA%\Microsoft\Internet Explorer\Quick Launch\Internet Explorer.lnk
%HOMEPATH%\Desktop\Internet Explorer.lnk
%HOMEPATH%\Start Menu\Internet Explorer.lnk
%ALLUSERSPROFILE%\Start Menu\Programs\Internet Explorer.lnk
%ALLUSERSPROFILE%\Start Menu\Internet Explorer.lnk
%HOMEPATH%\Desktop\7k7kРЎУОП·.lnk
%TEMP%\small.exe
%TEMP%\3596799a1543bc9f.aqq
%TEMP%\~DFD13E.tmp
%TEMP%\internet.exe
%TEMP%\starm.exe

Network activity:

Connects to:

'localhost':1071
'localhost':1056
'ha####qlf.3322.org':8888
'localhost':1089
'localhost':1076
'localhost':1074
'localhost':1053
'ad.##595.com':80
'bb#.#x008.cn':80
'localhost':8389
'localhost':1048
'localhost':1047
'25#.#55.255.255':8888

TCP:

HTTP GET requests:

ad.##595.com/count/count.asp?sz####################################################################################################################################################################################################
bb#.#x008.cn/ip.txt

UDP:

DNS ASK www.51##b.com
DNS ASK rn######.##m.cn&mac=00-00-00-00-00-01
DNS ASK co####.hao123soso.cn
DNS ASK www.k-#c.cn
DNS ASK www.ku##5.com
DNS ASK www.pp##pp.cn
DNS ASK ad.##595.com
DNS ASK bb#.#x008.cn
DNS ASK ha####qlf.3322.org
DNS ASK 10###6.3322.org
DNS ASK pa#####.funshion.com

Miscellaneous:

Searches for the following windows:

ClassName: '' WindowName: ''
ClassName: 'funshion_player_tzdenjohn' WindowName: '?????? V1.5.3.8Beta'
ClassName: 'MS_AutodialMonitor' WindowName: ''
ClassName: 'IEFrame' WindowName: ''
ClassName: 'MS_WebcheckMonitor' WindowName: ''
ClassName: 'IEFrame' WindowName: '???? - ???,??? - Microsoft Internet Explorer'
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'EDIT' WindowName: ''
ClassName: 'ReBarWindow32' WindowName: ''
ClassName: 'ToolbarWindow32' WindowName: ''
ClassName: 'MSTaskSwWClass' WindowName: ''

Curing recommendations

If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.

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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

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Download on App Store

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
- Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
- Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
- Switch off your device and turn it on as normal.

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