Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{MB3JKSW-Y883-WE0K-IY6U-SL6N6I178}] 'StubPath' = '%PROGRAM_FILES%\Large\server.exe Restart'
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{MB3JKSW-Y883-WE0K-IY6U-SL6N6I178}] 'StubPath' = ''
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'Policies' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = ''
Malicious functions:
Creates and executes the following:
- '%PROGRAM_FILES%\Large\server.exe'
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
- %TEMP%\GRY-XX-X
- %TEMP%\uU-GRY-Xx
- %APPDATA%\logs.dat
- %PROGRAM_FILES%\Large\server.exe
- %TEMP%\X-GRY-X.txt
Sets the 'hidden' attribute to the following files:
- %APPDATA%\logs.dat
Deletes the following files:
- %TEMP%\GRY-XX-X
- %TEMP%\uU-GRY-Xx
- %TEMP%\X-GRY-X.txt
Network activity:
Connects to:
- 'localhost':999
- 'g0####.no-ip.info':999
UDP:
- DNS ASK g0####.no-ip.info
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'