Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '3b4bd104ccc3a9dd4fe9f09a22897e68' = '"%TEMP%\dllhost.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '3b4bd104ccc3a9dd4fe9f09a22897e68' = '"%TEMP%\dllhost.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\3b4bd104ccc3a9dd4fe9f09a22897e68.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\dllhost.exe' = '%TEMP%\dllhost.exe:*:Enabled:dllhost.exe'
Creates and executes the following:
- 'C:\Extracted\setup.exe'
- '%TEMP%\dllhost.exe'
- 'C:\Extracted\Server.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\dllhost.exe" "dllhost.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\dllhost.exe
- %TEMP%\VSD1.tmp\install.log
- C:\Extracted\setup.exe
- %TEMP%\sfx.ini
- C:\Extracted\Server.exe
Deletes the following files:
- %TEMP%\sfx.ini
Network activity:
Connects to:
- 'je#####3000.no-ip.biz':16503
UDP:
- DNS ASK je#####3000.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
