Title: W32.Gosys

Type: Worms

Remove W32.Gosys. Removal instructions

Also known as: Gosys

Severity scale:

(26 / 100)

W32.Gosys is a worm that spreads through network shares. The worm is classified as low level system security threat, however, it opens a back door on the compromised computer and so may cause additional damage to the system. This worm may:

* Record keystrokes
* Update itself
* Send an email
* Download files
* Execute commands

Once installed, W32.Gosys created many files in main Windows OS directories. It also creates/modifies certain registry entries so that it executes whenever Windows starts. This worm usually can't be completely manually removed. If you find that your computer is infected with this worm, please use an automatic removal tool below to remove W32.Gosys from the system from your PC.

Related files: mrsys.exe, 3picsys[1].gif, cmsys[1].gif, 2picsys[1].gif, stsys.exe, blsys.bln, cmsys.cmn, explorer.exe, 2clksys1.ptn, 2clksys2.ptn, 2clksys3.ptn, 2clksys4.ptn, 2dclsys1.ptn, 2entsys1.ptn, 2entsys2.ptn, 2picsys.cpn, 3clksys1.ptn, 3clksys2.ptn, 3clksys3.ptn, 3clksys4.ptn, 3dclsys1.ptn, 3entsys1.ptn, 3entsys2.ptn, 3picsys.cpn, Spoolsv.exe, svchost.exe

W32.Gosys properties:
• Connects itself to the internet
• Hides from the user
• Stays resident in background

Automatic W32.Gosys removal:

remover for W32.Gosys

SpyHunter is recommended remover to uninstall W32.Gosys. You should confirm using free trial that it detects current version of parasite.

Note: Manual assistance required means that one or all of removers were unable to remove parasite without some manual intervention, please read manul removal instructions below.

If you failed to remove W32.Gosys using SpyHunter please report this to us.

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STOPzilla

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We are testing STOPzilla's efficiency at removing W32.Gosys (2009-11-12 09:06:18)

Malwarebytes Anti Malware

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We are testing Malwarebytes Anti Malware's efficiency at removing W32.Gosys (2009-11-12 09:06:18)

Spyware Doctor

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We are testing Spyware Doctor's efficiency at removing W32.Gosys (2009-11-12 09:06:18)

XoftSpySE Anti Spyware

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W32.Gosys manual removal:

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Kill processes:
mrsys.exe stsys.exe

HELP:
how to kill malicious processes

Delete registry values:
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\CurrentVersion\RunOnce\"Explorer" = "c:\windows\system32\explorer.exe RO"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\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"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\"Shell" = "%Windir%\explorer.exe, c:\windows\system32\explorer.exe"
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\"ShowSuperHidden" = "0"

HELP:
how to remove registry entries

Delete files:
%UserProfile%\\Application Data\\mrsys.exe %UserProfile%\\Local Settings\\Temporary Internet Files\\Content.IE5\\4H67CTM7\\3picsys[1].gif %UserProfile%\\Local Settings\\Temporary Internet Files\\Content.IE5\\GTYN8HUZ\\cmsys[1].gif %UserProfile%\\Local Settings\\Temporary Internet Files\\Content.IE5\\W9UNG1MR\\2picsys[1].gif %UserProfile%\\Application Data\\stsys.exe %System%\\blsys.bln %System%\\cmsys.cmn %System%\\explorer.exe %Windir%\\2clksys1.ptn %Windir%\\2clksys2.ptn %Windir%\\2clksys3.ptn %Windir%\\2clksys4.ptn %Windir%\\2dclsys1.ptn %Windir%\\2entsys1.ptn %Windir%\\2entsys2.ptn %Windir%\\2picsys.cpn %Windir%\\3clksys1.ptn %Windir%\\3clksys2.ptn %Windir%\\3clksys3.ptn %Windir%\\3clksys4.ptn %Windir%\\3dclsys1.ptn %Windir%\\3entsys1.ptn %Windir%\\3entsys2.ptn %Windir%\\3picsys.cpn %Windir%\\blsys.bln %Windir%\\spoolsv.exe %Windir%\\svchost.exe

HELP:
how to remove harmful files

Information added: 2009-11-12 06:06:45
Information updated: 2009-11-12 06:29:03

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