Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = '%TEMP%\InstallDir\Server.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = '%TEMP%\InstallDir\Server.exe'
- [<HKLM>\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{8251KKI0-580G-8M1S-0C3X-OU6I3535W01X}] 'StubPath' = '%TEMP%\InstallDir\Server.exe restart'
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
- %APPDATA%\microsoft\windows\7o2uc.cfg
- %TEMP%\installdir\server.exe
- %APPDATA%\microsoft\windows\7o2uc.dat
Sets the 'hidden' attribute to the following files
- %APPDATA%\microsoft\windows\7o2uc.cfg
- %TEMP%\installdir\server.exe
- %APPDATA%\microsoft\windows\7o2uc.dat
Network activity
UDP
- DNS ASK ab####sm1.zapto.org
Miscellaneous
Executes the following
- '%WINDIR%\syswow64\svchost.exe'
