Remove VBS.Runauto.H

Posted on: February 1st, 2010

Discovered: January 19, 2010
Updated: January 19, 2010 2:32:59 PM
Type: Worm
Systems Affected: Windows 98, Windows 95, Windows XP, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000
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Technical Details:
When the worm is executed, it creates the following file:

%System%\n.vbe

The worm creates the following registry entry, so that it starts when Windows

starts:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current

Version\Run\”dpzProtect” = “%System%\n.vbe”

It them modifies the following registry entry, so that it starts when Windows

starts:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current

Version\Winlogon\”Userinit” = “%System%\userinit.exe,%System%\wscript.

exe %System%\n.vbe”

The worm also modifies the following registry entries:

* HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\”

Window Title” = “Protected by DespoterZ”

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\Explorer\”NoSMHelp” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\Explorer\”NoStartMenuMFUprogramsList” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\Explorer\”NoSMMyDocs” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\Explorer\”NoRecentDocsMenu” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\Explorer\”NoSMMyPictures” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\Explorer\”NoStartMenuMyMusic” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\Explorer\”NoFolderOptions” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\System\”DisableTaskMgr” = “0″

* HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\

Policies\System\”DisableRegistryTools” = “0″

* HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current

Version\”RegisteredOwner” = “Microsoft”

* HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current

Version\”RegisteredOrganization” = “.”

* HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current

Version\Winlogon\”LegalNoticeCaption” = “”

* HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current

Version\Winlogon\”LegalNoticeText” = “”

* HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current

Version\Explorer\Advanced\Folder\Hidden\SHOWALL\”CheckedValue” = “0″

* HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current

Version\Explorer\Advanced\Folder\SuperHidden\”UncheckedValue” = “0″

* HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current

Version\Winlogon\”Shell” = “explorer.exe”

The worm deletes the following files:

* %System%\VirusRemoval.vbs

* %System%\neo.vbe

* %System%\amvo.exe

* %System%\avpo.exe

* %System%\winlogons.exe

* %System%\ssvichosst.exe

* %System%\tmp.exe

* %System%\scvhost.exe

* %System%\explorer.exe

* %System%\service.exe

* %System%\soundmix.exe

* %System%\regsvr.exe

* %DriveLetter%\ravmon.exe

* %DriveLetter%\sxs.exe

* %DriveLetter%\winfile.exe

* %DriveLetter%\run.wsh

The worm then deletes all files with file names that start with “autorun” in the

root folder of all removable drives, all .inf and .scr files in the root folder of all

fixed drives, and all .vbe files in the root and %Windir% folder of all drives

except drive A.

It then copies the following files to all available removable drives except A:

* %DriveLetter%\n.vbe

* %DriveLetter%\autorun.inf

Action Steps:
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