Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Java Update' = '%TEMP%\InstallDir\explorer.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Windows Update' = '%TEMP%\InstallDir\explorer.exe'
- [<HKLM>\Software\Microsoft\Windows\CurrentVersion\Run] 'Skype Update' = '%TEMP%\InstallDir\explorer.exe'
- [<HKLM>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Adobe Update' = '%TEMP%\InstallDir\explorer.exe'
Malicious functions
To bypass firewall, removes or modifies the following registry keys
- [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
- [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
- Command Prompt (CMD)
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
modifies the following system settings:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRun' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoControlPanel' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
- [<HKLM>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoViewContextMenu' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoViewContextMenu' = '00000001'
Executes the following
- '<SYSTEM32>\netsh.exe' firewall set opmode disable
Modifies file system
Creates the following files
- %TEMP%\installdir\explorer.exe
- C:\notepad.exe
- D:\notepad.exe
Network activity
UDP
- DNS ASK ko#####5a111.ddns.net
Miscellaneous
Searches for the following windows
- ClassName: 'Shell_traywnd' WindowName: ''
Creates and executes the following
- '%TEMP%\installdir\explorer.exe'
- '<SYSTEM32>\cmd.exe' /k <SYSTEM32>\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f' (with hidden window)
- '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoControlPanel /t REG_DWORD /d 1 /f' (with hidden window)
- '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoFolderOptions /t REG_DWORD /d 1 /f' (with hidden window)
- '<SYSTEM32>\reg.exe' add HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoViewContextMenu /t REG_DWORD /d 1 /f' (with hidden window)
- '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoViewContextMenu /t REG_DWORD /d 1 /f' (with hidden window)
- '<SYSTEM32>\netsh.exe' firewall set opmode disable' (with hidden window)
Executes the following
- '<SYSTEM32>\cmd.exe' /k <SYSTEM32>\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
- '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoControlPanel /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoFolderOptions /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add HKLM\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoViewContextMenu /t REG_DWORD /d 1 /f
- '<SYSTEM32>\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer /v NoViewContextMenu /t REG_DWORD /d 1 /f
