Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ddb2c33a89bbcbe44079cba1a1b6709b' = '"%TEMP%\trojanl.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ddb2c33a89bbcbe44079cba1a1b6709b' = '"%TEMP%\trojanl.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\ddb2c33a89bbcbe44079cba1a1b6709b.exe
Creates the following files on removable media:
- <Drive name for removable media>:\srxrol.pif
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\Explorer.EXE' = '%WINDIR%\Explorer.EXE:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\trojanl.exe' = '%TEMP%\trojanl.exe:*:Enabled:trojanl.exe'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\DriverPackSolution.exe' = '%TEMP%\DriverPackSolution.exe:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks the following features:
- User Account Control (UAC)
- Windows Security Center
Creates and executes the following:
- '%TEMP%\trojanl.exe'
- '%TEMP%\Server.exe'
- '%TEMP%\DriverPackSolution.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\trojanl.exe" "trojanl.exe" ENABLE
Injects code into
the following system processes:
- <SYSTEM32>\netsh.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- %TEMP%\noeetk.exe
- %TEMP%\winxvhnnn.exe
- C:\guto.exe
- C:\autorun.inf
- <DRIVERS>\fkssi.sys
- %TEMP%\Server.exe
- %TEMP%\DriverPackSolution.exe
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
- %TEMP%\trojanl.exe
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\srxrol.pif
- C:\autorun.inf
- C:\guto.exe
Deletes the following files:
- <DRIVERS>\fkssi.sys
- %TEMP%\winxvhnnn.exe
- %TEMP%\noeetk.exe
- %TEMP%\DriverPackSolution.exe
- %TEMP%\Server.exe
- %TEMP%\trojanl.exe
Moves the following files:
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
- 'de#####ngell.no-ip.biz':1177
UDP:
- DNS ASK de#####ngell.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
