Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'FlashUpdate' = '%TEMP%\WmsUpdate.exe'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks the following features:
- User Account Control (UAC)
Creates and executes the following:
- '%TEMP%\WmsUpdate.exe'
Executes the following:
- '<SYSTEM32>\reg.exe' ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
- '<SYSTEM32>\cmd.exe' /c REG ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
Modifies file system:
Creates the following files:
- %TEMP%\WmsUpdate.exe
- %TEMP%\novinha.txt
Sets the 'hidden' attribute to the following files:
- %TEMP%\WmsUpdate.exe
Network activity:
Connects to:
- 'sm###.uol.com.br':587
UDP:
- DNS ASK sm###.uol.com.br
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: 'RDO89'
