W32.Daprosy

What is W32.Daprosy?

W32.Daprosy is a worm that will arrive on computer via attached file to spam email messages. W32.Daprosy may spreads through network mapped, fixed, and removable storage devices.

What W32.Daprosy Does?

It will create Windows Registry entries:

• HKEY_CURRENT_USER\Software\Microsoft\Windows\Current Version\Run\”WinSys” = “%Windir%\system.exe”
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Run\”LSAShell” = “%Windir%\lsass.exe”
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\Run\”SessionMngr” = “C:\Documents and Settings\All Users\Application Data\PolariSys\dirlock.exe”
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current Version\Winlogon\”Shell” = “Explorer.exe \”C:\Documents and Settings\All Users\Application Data\Microsoft\Keyboard\kbdsys.exe\”

The threat will drop the following malicious files:

• C:\Windows.exe
• C:\Program Files.exe
• C:\[Existing Folder Name].exe
• %System%\hlpsvc1.exe
• %System%\hlpsvc2.exe
• %SystemDrive%\Read1st!.exe
• %SystemDrive%\goats.exe
• %Windir%\Classified.exe
• %Windir%\system.exe
• %Windir%\lsass.exe
• %UserProfile%\My Documents\Classified.exe
• C:\Documents and Settings\All Users\Application Data\Microsoft\Keyboard\kbdsys.exe
• C:\Documents and Settings\All Users\Application Data\PolariSys\dirlock.exe
• %Windir%\shutdown.dll
• %DriveLetter%\Classified.exe
• %DriveLetter%\Read1st!.exe
• %DriveLetter%\autorun.inf
• %SystemDrive%\autorun.inf

How to Remove W32.Daprosy Manually

1. Restart your computer in SafeMode
- After Power-On the computer, just before Windows start, press F8
- From the selections, Select SafeMode

2. Remove Registry entries that the threat added. You MUST BACKUP YOUR REGISTRY FIRST.
- Click Start > Run
- Type in the field, regedit
- Navigate and look for the registry entries mentioned above and delete if necessary

3. Delete malicious files that the threat added:
- Base on the given location above, browse and delete the file
- If no location is given, click Start>Search> and search for the file.
- If cannot be deleted, press Ctrl+Alt+Del to access Task Manager, see if the file is running in the process. If it is, select the file and click End Process. Perform file delete again.