Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '7338b198ca7e6af6b13b5bb7a8a46c2b' = '"%HOMEPATH%\Google Chrome.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '7338b198ca7e6af6b13b5bb7a8a46c2b' = '"%HOMEPATH%\Google Chrome.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\7338b198ca7e6af6b13b5bb7a8a46c2b.exe
Creates the following files on removable media:
- <Drive name for removable media>:\usjf.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\7338b198ca7e6af6b13b5bb7a8a46c2b.exe
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] '%HOMEPATH%\Google Chrome.exe' = '%HOMEPATH%\Google Chrome.exe:*:Enabled:Google Chrome.exe'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\Local Settings\Tempface.exe' = '%HOMEPATH%\Local Settings\Tempface.exe:*:Enabled:ipsec'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '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:
- '%HOMEPATH%\Google Chrome.exe'
- '%HOMEPATH%\Local Settings\Tempsexy1.exe'
- '%HOMEPATH%\Local Settings\Tempface.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\Google Chrome.exe" "Google Chrome.exe" ENABLE
Injects code into
the following system processes:
- <SYSTEM32>\cscript.exe
- <SYSTEM32>\netsh.exe
- <SYSTEM32>\cmd.exe
- %WINDIR%\Explorer.EXE
- <SYSTEM32>\ctfmon.exe
a large number of user processes.
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\hbspam.xpg.com[1]
- %TEMP%\wineyamnu.exe
- %APPDATA%\Microsoft\CLR Security Config\v2.0.50727.42\security.config.cch.new
- <DRIVERS>\jhnln.sys
- %TEMP%\windoyuha.exe
- C:\autorun.inf
- C:\axxel.pif
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
- %HOMEPATH%\Local Settings\Tempface.exe
- %HOMEPATH%\Local Settings\Tempsexy1.exe
- %HOMEPATH%\Google Chrome.exe
- %TEMP%\winxaxw.exe
- %TEMP%\0007AD93_Rar\Tempface.exe
- %TEMP%\0007AF77_Rar\Tempface.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\usjf.exe
- C:\axxel.pif
- <Drive name for removable media>:\7338b198ca7e6af6b13b5bb7a8a46c2b.exe
- C:\autorun.inf
Deletes the following files:
- %TEMP%\0007AF77_Rar\Tempface.exe
- <DRIVERS>\jhnln.sys
- %TEMP%\windoyuha.exe
- %TEMP%\wineyamnu.exe
- %TEMP%\winxaxw.exe
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.2736.500984
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.2736.501000
Moves the following files:
- from %APPDATA%\Microsoft\CLR Security Config\v2.0.50727.42\security.config.cch.new to %APPDATA%\Microsoft\CLR Security Config\v2.0.50727.42\security.config.cch
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.2736.501000
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.2736.500984
- 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
- 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
Network activity:
Connects to:
- 'localhost':445
- '<Private IP address>':80
- 'localhost':1039
- 'hb####.xpg.com.br':80
TCP:
HTTP GET requests:
- hb####.xpg.com.br/
UDP:
- DNS ASK go#####chrome.sytes.net
- DNS ASK hb####.xpg.com.br
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
