Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '362' = 'h:\svchosto.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '363' = 'C:\svchosto.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '361' = 'g:\svchosto.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '36555' = '<SYSTEM32>\svchosto.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '360' = 'f:\svchosto.exe'
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\OGQFCHJO] 'ImagePath' = '<DRIVERS>\OGQFCHJO.sys'
Creates the following files on removable media:
- <Drive name for removable media>:\svchosto.exe
- <Drive name for removable media>:\AutoRun.inf
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\Setup\servero.exe'
Hooks the following functions in System Service Descriptor Table (SSDT):
- NtWriteVirtualMemory, handler: OGQFCHJO.sys
- NtReadVirtualMemory, handler: OGQFCHJO.sys
- NtOpenProcess, handler: OGQFCHJO.sys
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- <SYSTEM32>\svchosto.exe
- <SYSTEM32>\Setup\servero.exe
- <DRIVERS>\OGQFCHJO.sys
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\svchosto.exe
- <Drive name for removable media>:\AutoRun.inf
Deletes the following files:
- <DRIVERS>\OGQFCHJO.sys
Moves the following files:
- from <SYSTEM32>\Setup\servero.exe to %PROGRAM_FILES%\space.exe
Network activity:
Connects to:
- 'hu##.3322.org':2013
- 'localhost':2014
- 'qw####800.gicp.net':2013
- 'www.tx##88.com':80
TCP:
HTTP GET requests:
- www.tx##88.com/2013/rc/0.txt
UDP:
- DNS ASK hu##.3322.org
- DNS ASK www.tx##88.com
- DNS ASK qw####800.gicp.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
