Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'SysAnti' = '%CommonProgramFiles(x86)%\SysAnti.exe'
Sets the following service settings
- [<HKLM>\System\CurrentControlSet\Services\DrvKiller] 'ImagePath' = '%WINDIR%\Fonts\uwmn.fon'
- [<HKLM>\System\CurrentControlSet\Services\DrvKiller] 'ImagePath' = '%WINDIR%\Fonts\wkhn.fon'
Creates the following services
- 'DrvKiller' %WINDIR%\Fonts\uwmn.fon
- 'DrvKiller' %WINDIR%\Fonts\wkhn.fon
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
- %WINDIR%\fonts\axmrg.dll
- %WINDIR%\fonts\uwmn.fon
- %WINDIR%\temp\uddcc72.tmp
- %CommonProgramFiles(x86)%\sysanti.exe
- %WINDIR%\fonts\cfsge.dll
- %WINDIR%\fonts\wkhn.fon
Sets the 'hidden' attribute to the following files
- %CommonProgramFiles(x86)%\sysanti.exe
Deletes the following files
- %WINDIR%\temp\uddcc72.tmp
- %WINDIR%\fonts\uwmn.fon
- %WINDIR%\fonts\wkhn.fon
Network activity
UDP
- DNS ASK qm###.com.cn
Miscellaneous
Creates and executes the following
- '%CommonProgramFiles(x86)%\sysanti.exe' -One
- '%CommonProgramFiles(x86)%\sysanti.exe' -One' (with hidden window)
- '%WINDIR%\syswow64\svchost.exe' ' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\rundll32.exe' "%WINDIR%\Fonts\axmrg.dll",MyKILLEntry
- '%WINDIR%\syswow64\rundll32.exe' "%WINDIR%\Fonts\cfsge.dll",MyKILLEntry
- '%WINDIR%\syswow64\svchost.exe'
