Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\RunOnce] 'Update' = '%APPDATA%\system\winlogon.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Update' = '%APPDATA%\system\winlogon.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe, %APPDATA%\system\winlogon.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\system\winlogon.exe' = '%APPDATA%\system\winlogon.exe:*:Enabled:winlogon.exe'
To complicate detection of its presence in the operating system,
blocks the following features:
- User Account Control (UAC)
Creates and executes the following:
- %APPDATA%\System\winlogon.exe
Executes the following:
- <SYSTEM32>\reg.exe add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run" /v "Update" /t reg_sz /d "%APPDATA%\system\winlogon.exe" /f
- <SYSTEM32>\reg.exe add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce" /v "Update" /t reg_sz /d "%APPDATA%\system\winlogon.exe" /f
- <SYSTEM32>\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
- <SYSTEM32>\reg.exe add "HKLM\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List" /v "%APPDATA%\system\winlogon.exe" /t reg_sz /d "%APPDATA%\system\winlogon.exe:*:Enabled:winlogon.exe" /f
Modifies file system :
Creates the following files:
- %APPDATA%\System\winlogon.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\System\winlogon.exe
Moves itself:
- from <Full path to virus> to C:\RECYCLER\find_me.tmp
Network activity:
Connects to:
- 'so#####dplanners.org':80
TCP:
HTTP GET requests:
- so#####dplanners.org/flower.php?id####################################
UDP:
- DNS ASK so#####dplanners.org
