Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = '%WINDIR%\install\server.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = '%WINDIR%\install\server.exe'
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = '%WINDIR%\install\server.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = '%WINDIR%\install\server.exe'
- [<HKLM>\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{L0K8UN1O-4EUR-O3U8-70L6-F5T07D16MF5K}] 'StubPath' = '%WINDIR%\install\server.exe Restart'
- [<HKLM>\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{L0K8UN1O-4EUR-O3U8-70L6-F5T07D16MF5K}] 'StubPath' = '%WINDIR%\install\server.exe'
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\syswow64\explorer.exe
Searches for windows to
detect analytical utilities:
- ClassName: 'OLLYDBG', WindowName: ''
- ClassName: 'GBDYLLO', WindowName: ''
- ClassName: 'pediy06', WindowName: ''
- ClassName: 'FilemonClass', WindowName: ''
- ClassName: '', WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'PROCMON_WINDOW_CLASS', WindowName: ''
- ClassName: '', WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'RegmonClass', WindowName: ''
- ClassName: '', WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
Modifies file system
Creates the following files
- %WINDIR%\install\server.exe
- %TEMP%\user2.txt
- %APPDATA%\1bcfbb8e\ak.tmp
- %APPDATA%\user-wchelper.dll
- %TEMP%\user7
- %TEMP%\user8
Sets the 'hidden' attribute to the following files
- %WINDIR%\install\server.exe
- %APPDATA%\user-wchelper.dll
Deletes the following files
- %TEMP%\user2.txt
- %TEMP%\user7
- %TEMP%\user8
Substitutes the following files
- %TEMP%\user7
- %TEMP%\user8
Deletes itself.
Network activity
Connects to
- '<LOCALNET>.0.12':5000
Miscellaneous
Searches for the following windows
- ClassName: '18467-41' WindowName: ''
Creates and executes the following
- '%WINDIR%\install\server.exe'
- '%WINDIR%\install\server.exe' ' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\explorer.exe'
- '%ProgramFiles(x86)%\internet explorer\iexplore.exe'
