W32.Gosys is a Worm that may allow a remote attacker to record keystrokes, download files and execute a command on the infected computer by using a backdoor port it created. W32.Gosys spreads on local removable drives and network-shared drives.

Alias: -

Damage Level: Low

Systems Affected: Windows

Manual Removal of W32.Gosys

1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. Update the virus definitions.
3. Reboot computer in SafeMode [how to]
4. Run a full system scan and clean/delete all infected file(s)
5. Delete/Modify any values added to the registry. [how to edit registry]

Navigate to and delete the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\”StubPath” = “%UserProfile%\Local Settings\Application Data\mrsys.exe MR”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\”StubPath” = “%UserProfile%\Local Settings\Application Data\mrsys.exe MR”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\RunOnce\”Explorer” = “c:\windows\system32\explorer.exe RO”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\RunOnce\”Svchost” = “c:\windows\svchost.exe RO”
HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Explorer\Process\”LO” = “0″
HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Explorer\Process\”BL” = “c:\tools\regshot.exe”
HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Explorer\Process\”NF” = “0″
HKEY_CURRENT_USER\Software\VB and VBA Program Settings\Svchost\Process\”BL” = “c:\tools\regshot.exe”

Navigate to and restore the following registry entries to their previous values, if required:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\”Shell” = “%Windir%\explorer.exe, c:\windows\system32\explorer.exe”
HKEY_CURRENT_USER\Software\Microsoft\Windows\Current Version\Explorer\Advanced\”ShowSuperHidden” = “0″

6. Exit registry editor and restart the computer.
7. In order to make sure that threat is completely eliminated from your computer, carry out a full scan of your computer using AntiVirus and Antispyware Software. Another way to delete the virus using various Antivirus Program without the need to install can be done with Online Virus Scanner.