Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'shell' = 'explorer.exe,%TEMP%\.exe'
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{VBHA26EV-I35T-4YLJ-OK10-0466KLL18775}] 'StubPath' = '<SYSTEM32>\install\server.exe Restart'
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{VBHA26EV-I35T-4YLJ-OK10-0466KLL18775}] 'StubPath' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'GrooveManagementServer' = '%TEMP%\.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = ''
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'Policies' = ''
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = ''
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'HKLM' = ''
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\install\server.exe'
Executes the following:
- '<SYSTEM32>\reg.exe' add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "GrooveManagementServer" /t REG_SZ /d "%TEMP%\.exe
- '<SYSTEM32>\reg.exe' add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d explorer.exe,"%TEMP%\.exe"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe'
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
- %APPDATA%\%USERNAME%log.dat
- %TEMP%\%USERNAME%7
- %TEMP%\%USERNAME%8
- %TEMP%\.exe
- <SYSTEM32>\install\server.exe
- %TEMP%\%USERNAME%2.txt
Sets the 'hidden' attribute to the following files:
- %APPDATA%\%USERNAME%log.dat
Deletes the following files:
- %TEMP%\%USERNAME%7
- %TEMP%\%USERNAME%8
- %TEMP%\%USERNAME%2.txt
Network activity:
Connects to:
- 'ob####ker.no-ip.org':81
UDP:
- DNS ASK ob####ker.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
