Trojan.Siggen10.40116

Technical Information

To ensure autorun and distribution

Sets the following service settings

[<HKLM>\System\CurrentControlSet\Services\abc2.0] 'ImagePath' = '%TEMP%\~abcwZfEs.sys'
[<HKLM>\System\CurrentControlSet\Services\abc2.0] 'ImagePath' = '%TEMP%\~abcnnWOc.sys'
[<HKLM>\System\CurrentControlSet\Services\abc2.0] 'ImagePath' = '%TEMP%\~abcmyGL5.sys'
[<HKLM>\System\CurrentControlSet\Services\abc2.0] 'ImagePath' = '%TEMP%\~abcXeqbG.sys'

Creates the following services

'abc2.0' %TEMP%\~abcwZfEs.sys
'abc2.0' %TEMP%\~abcnnWOc.sys
'abc2.0' %TEMP%\~abcmyGL5.sys
'abc2.0' %TEMP%\~abcXeqbG.sys

Malicious functions

Sets a new unauthorized home page for Windows Internet Explorer.

Modifies file system

Creates the following files

%TEMP%\~abcwZfEs.sys
%WINDIR%\temp\udd842c.tmp
%TEMP%\~abcnnWOc.sys
%TEMP%\9d178kw84oa.exe
%TEMP%\~abcmyGL5.sys
%TEMP%\~abcXeqbG.sys
%APPDATA%\microsoft\internet explorer\userdata\index.dat
%APPDATA%\microsoft\internet explorer\userdata\h8j67wy6\userdatabidupsid[1].xml
%LOCALAPPDATA%\microsoft\windows\history\history.ie5\mshist012020102020201021\index.dat
%APPDATA%\microsoft\internet explorer\userdata\vo762sq0\oxmlstore[1].xml

Sets the 'hidden' attribute to the following files

%TEMP%\~abcwZfEs.sys
%TEMP%\~abcnnWOc.sys
%TEMP%\~abcmyGL5.sys
%TEMP%\~abcXeqbG.sys

Deletes the following files

%WINDIR%\temp\udd842c.tmp
%TEMP%\~abcwZfEs.sys
%TEMP%\~abcnnWOc.sys
%TEMP%\~abcmyGL5.sys
%TEMP%\~abcXeqbG.sys

Network activity

TCP

HTTP GET requests

http://do#####d.kulove123.com/tcgg.txt

'ba##u.com':443

'ds##.#dstatic.com':443

'he#####tatic.baidu.com':443

'ss#.##static.com':443

UDP

DNS ASK do#####d.kulove123.com
DNS ASK ba##u.com
DNS ASK microsoft.com
DNS ASK m.##idu.com
DNS ASK ds##.#dstatic.com
DNS ASK sp#.#aidu.com
DNS ASK he#####tatic.baidu.com
DNS ASK ss#.##static.com

Miscellaneous

Searches for the following windows

ClassName: '' WindowName: 'Microsoft Internet Explorer'
ClassName: 'DDEMLMom' WindowName: ''
ClassName: 'IEFrame' WindowName: ''
ClassName: '' WindowName: 'TPHelper.exe'
ClassName: 'Static' WindowName: ''
ClassName: 'MS_AutodialMonitor' WindowName: ''
ClassName: 'MS_WebCheckMonitor' WindowName: ''

Creates and executes the following

'%TEMP%\9d178kw84oa.exe'

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.

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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.

Technologies

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