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Antivirus2010


Antivirus 2010 is a variant of Win32/FakeXPA - a family of programs that claims to scan for malware and displays fake warnings of “malicious programs and viruses”. They then inform the user that they need to pay money to register the software in order to remove these non-existent threats. Some members of the Win32/FakeXPA family may also download additional malware and have been observed in the wild downloading variants of Win32/Alureon.
 
Special Note:
Reports of Rogue Antivirus programs have been more prevalent as of late.  These are programs that generate misleading alerts and false detections in order to convince users to purchase illegitimate security software.  Some of these programs, such as Trojan:Win32/Antivirusxp and Program:Win32/FakeRednefed may display product names or logos in an apparently unlawful attempt to impersonate Microsoft products.  These products may represent themselves as “Antivirus XP”, “AntivirusXP 2008”, “WinDefender 2008”, “XP Antivirus”, or similar.
 
Use Microsoft Windows Defender, Microsoft Security Essentials, the Microsoft Safety Scanner, or another up-to-date scanning and removal tool to detect and remove this threat and other unwanted software from your computer. For more information on Microsoft security products, see http://www.microsoft.com/protect/products/computer/default.mspx.


What to do now

Use Microsoft Windows Defender, Microsoft Security Essentials, the Microsoft Safety Scanner, or another up-to-date scanning and removal tool to detect and remove this threat and other unwanted software from your computer. For more information on Microsoft security products, see http://www.microsoft.com/protect/products/computer/default.mspx.
 
 
For information on additional support options worldwide, see http://www.microsoft.com/protect/support/default.mspx.

Threat behavior

Antivirus 2010 is a variant of Win32/FakeXPA - a family of programs that claims to scan for malware and displays fake warnings of “malicious programs and viruses”. They then inform the user that they need to pay money to register the software in order to remove these non-existent threats. Some members of the Win32/FakeXPA family may also download additional malware and have been observed in the wild downloading variants of Win32/Alureon.
 
Win32/FakeXPA  has been distributed with many different names. The name used by the malware, the user interface and other details vary to reflect each variant’s individual branding. The following details describe Win32/FakeXPA when it is distributed with the name Antivirus 2010.
Installation
The Antivirus 2010 installer downloads and installs several files from the download-av2010.info domain, including:
 
  • AV2010.exe
This is the fake scanner itself. In addition to the scanner window, it displays an icon in the system tray (and popup messages from that icon), popup alerts warning of "infections", "database update" dialogs and a window that imitates the Windows Security Center.
It may be saved as:
C:\Documents and Settings\All Users\Application Data\AV2010\AV2010.exe. See below for examples of the icon, pop-up alerts, update dialog and imitation Windows Security Center:





  • autostart.exe
This component launches the fake scanner and can also download the latest version of any components if, for example, they are removed. It may be saved as:
C:\Documents and Settings\All Users\Application Data\SysLoader.exe. See below for an example of the fake scanning interface:


It adds an entry to the registry so it is launched each time Windows starts, for example:
Value: Gamma Loader
Data: "C:\Documents and Settings\All Users\Application Data\SysLoader.exe" /adjustment
Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
 
The '/adjustment' parameter tells the launcher to be "silent", i.e. not show the installation dialog.
 
  • IEDefender.dll
This component may be saved to:
C:\Documents and Settings\All Users\Application Data\AV2010\IEDefender.dll
 
It is installed as a BHO in order to display fake "drop-down" messages within Internet Explorer. Clicking on the message directs IE to a web page that allows the user to purchase "Antivirus 2010". Please see below for an example:

 
When registering IEDefender.dll as a BHO, the following registry changes may be made:
 
Key: HKCR\AppID\{3C40236D-990B-443C-90E8-B1C07BCD4A68}
Value: (Default)
Data: IEDefender
 
Key: HKCR\AppID\IEDefender.DLL
Value: AppID
Data: {3C40236D-990B-443C-90E8-B1C07BCD4A68}
 
Key: HKCR\IEDefender.IEDefenderBHO.1
Value: (Default)
Data: IEDefenderBHO Class
 
Key: HKCR\IEDefender.IEDefenderBHO.1\CLSID
Value: (Default)
Data: {FC8A493F-D236-4653-9A03-2BF4FD94F643}
 
Key: HKCR\IEDefender.IEDefenderBHO
Value: (Default)
Data: IEDefenderBHO Class
 
Key: HKCR\IEDefender.IEDefenderBHO\CLSID
Value: (Default)
Data: {FC8A493F-D236-4653-9A03-2BF4FD94F643}
 
Key: HKCR\IEDefender.IEDefenderBHO\CurVer
Value: (Default)
Data: HelloWorld.HelloWorldBHO.1
 
Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}
Value: (Default)
Data: IEDefenderBHO Class
 
Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\ProgID
Value: (Default)
Data: IEDefender.IEDefenderBHO.1
 
Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\VersionIndependentProgID
Value: (Default)
Data: IEDefender.IEDefenderBHO
 
Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\InprocServer32
Value: (Default)
Data: C:\Documents and Settings\All Users\Application Data\AV2010\IEDefender.dll
 
Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\InprocServer32
Value: ThreadingModel
Data: Apartment
 
Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\TypeLib
Value: (Default)
Data: {705FD64B-2B7B-4856-9337-44CA1DA86849}
 
Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FC8A493F-D236-4653-9A03-2BF4FD94F643}
Value: (Default)
Data: IEDefenderBHO
 
Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FC8A493F-D236-4653-9A03-2BF4FD94F643}
Value: NoExplorer
Data: 1
 
Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0
Value: (Default)
Data: HelloWorld 1.0 Type Library
 
Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0\FLAGS
Value: (Default)
Data: 0
 
Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0\0\win32
Value: (Default)
Data: C:\Documents and Settings\All Users\Application Data\AV2010\IEDefender.dll
 
Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0\HELPDIR
Value: (Default)
Data: C:\Documents and Settings\All Users\Application Data\AV2010
 
Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}
Value: (Default)
Data: IHelloWorldBHO
 
Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\ProxyStubClsid
Value: (Default)
Data: {00020424-0000-0000-C000-000000000046}
 
Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\ProxyStubClsid32
Value: (Default)
Data: {00020424-0000-0000-C000-000000000046}
 
Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\TypeLib
Value: (Default)
Data: {705FD64B-2B7B-4856-9337-44CA1DA86849}
 
Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\TypeLib
Value: Version
Data: 1.0
 
  • svchost.exe
This program displays a fake "blue screen" crash screen, followed by a fake restart screen. It may be saved to:
C:\Documents and Settings\All Users\Application Data\AV2010\svchost.exe.

The installer also creates the following shortcut on the desktop:
C:\Documents and Settings\All Users\Desktop\AV2010.lnk
and a folder containing two items in the start menu:
C:\Documents and Settings\All Users\Start Menu\Programs\AV2010\AV2010.lnk
C:\Documents and Settings\All Users\Start Menu\Programs\AV2010\Uninstall.lnk
 
Win32/FakeXPA may also make the following registry modifications when distributed as Antivirus 2010:
Key: HKCU\Software\AV2010\AV2010\{F275E931-AFEC-4f70-B0D4-CC2731B945E0}
Value: {9BB761E6-288E-4782-8538-9069141F34B6}
Data: 1
 
Key: HKCU\Software\AV2010\AV2010\{F275E931-AFEC-4f70-B0D4-CC2731B945E0}
Value: {BE8A5069-82B0-4214-98DB-715C2B6D3117}
Data: D8 07 0C 00 01 00 16 00 15 00 39 00 27 00 E7 03
 
Analysis by Hamish O'Dea

Symptoms

System changes
The following system changes may indicate the presence of this Win32/FakeXPA when distributed as Antivirus 2010:
  • The presence of the following files:
    C:\Documents and Settings\All Users\Application Data\AV2010\AV2010.exe
    C:\Documents and Settings\All Users\Application Data\SysLoader.exe
    C:\Documents and Settings\All Users\Application Data\AV2010\IEDefender.dll
    C:\Documents and Settings\All Users\Application Data\AV2010\svchost.exe
    C:\Documents and Settings\All Users\Desktop\AV2010.lnk
    C:\Documents and Settings\All Users\Start Menu\Programs\AV2010\AV2010.lnk
    C:\Documents and Settings\All Users\Start Menu\Programs\AV2010\Uninstall.lnk
  • The presence of the following registry modifications:
    Value: Gamma Loader
    Data: "C:\Documents and Settings\All Users\Application Data\SysLoader.exe" /adjustment
    Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
  • Key: HKCR\AppID\{3C40236D-990B-443C-90E8-B1C07BCD4A68}
    Value: (Default)
    Data: IEDefender
     
    Key: HKCR\AppID\IEDefender.DLL
    Value: AppID
    Data: {3C40236D-990B-443C-90E8-B1C07BCD4A68}
     
    Key: HKCR\IEDefender.IEDefenderBHO.1
    Value: (Default)
    Data: IEDefenderBHO Class
     
    Key: HKCR\IEDefender.IEDefenderBHO.1\CLSID
    Value: (Default)
    Data: {FC8A493F-D236-4653-9A03-2BF4FD94F643}
     
    Key: HKCR\IEDefender.IEDefenderBHO
    Value: (Default)
    Data: IEDefenderBHO Class
     
    Key: HKCR\IEDefender.IEDefenderBHO\CLSID
    Value: (Default)
    Data: {FC8A493F-D236-4653-9A03-2BF4FD94F643}
     
    Key: HKCR\IEDefender.IEDefenderBHO\CurVer
    Value: (Default)
    Data: HelloWorld.HelloWorldBHO.1
     
    Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}
    Value: (Default)
    Data: IEDefenderBHO Class
     
    Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\ProgID
    Value: (Default)
    Data: IEDefender.IEDefenderBHO.1
     
    Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\VersionIndependentProgID
    Value: (Default)
    Data: IEDefender.IEDefenderBHO
     
    Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\InprocServer32
    Value: (Default)
    Data: C:\Documents and Settings\All Users\Application Data\AV2010\IEDefender.dll
     
    Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\InprocServer32
    Value: ThreadingModel
    Data: Apartment
     
    Key: HKCR\CLSID\{FC8A493F-D236-4653-9A03-2BF4FD94F643}\TypeLib
    Value: (Default)
    Data: {705FD64B-2B7B-4856-9337-44CA1DA86849}
     
    Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FC8A493F-D236-4653-9A03-2BF4FD94F643}
    Value: (Default)
    Data: IEDefenderBHO
     
    Key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{FC8A493F-D236-4653-9A03-2BF4FD94F643}
    Value: NoExplorer
    Data: 1
     
    Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0
    Value: (Default)
    Data: HelloWorld 1.0 Type Library
     
    Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0\FLAGS
    Value: (Default)
    Data: 0
     
    Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0\0\win32
    Value: (Default)
    Data: C:\Documents and Settings\All Users\Application Data\AV2010\IEDefender.dll
     
    Key: HKCR\TypeLib\{705FD64B-2B7B-4856-9337-44CA1DA86849}\1.0\HELPDIR
    Value: (Default)
    Data: C:\Documents and Settings\All Users\Application Data\AV2010
     
    Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}
    Value: (Default)
    Data: IHelloWorldBHO
     
    Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\ProxyStubClsid
    Value: (Default)
    Data: {00020424-0000-0000-C000-000000000046}
     
    Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\ProxyStubClsid32
    Value: (Default)
    Data: {00020424-0000-0000-C000-000000000046}
     
    Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\TypeLib
    Value: (Default)
    Data: {705FD64B-2B7B-4856-9337-44CA1DA86849}
     
    Key: HKCR\Interface\{7BC7565C-5062-43CE-8797-DC2C271140A9}\TypeLib
    Value: Version
    Data: 1.0
    Key: HKCU\Software\AV2010\AV2010\{F275E931-AFEC-4f70-B0D4-CC2731B945E0}
    Value: {9BB761E6-288E-4782-8538-9069141F34B6}
    Data: 1
     
    Key: HKCU\Software\AV2010\AV2010\{F275E931-AFEC-4f70-B0D4-CC2731B945E0}
    Value: {BE8A5069-82B0-4214-98DB-715C2B6D3117}
    Data: D8 07 0C 00 01 00 16 00 15 00 39 00 27 00 E7 03
  • The display of the following messages:















Prevention

Take the following steps to help prevent infection on your system:
  • Enable a firewall on your computer.
  • Get the latest computer updates for all your installed software.
  • Use up-to-date antivirus software.
  • Use caution when opening attachments and accepting file transfers.
  • Use caution when clicking on links to Web pages.
  • Avoid downloading pirated software.
  • Protect yourself against social engineering attacks.
  • Use strong passwords.
Enable a firewall on your computer
Use a third-party firewall product or turn on the Microsoft Windows Internet Connection Firewall.
Get the latest computer updates
Updates help protect your computer from viruses, worms, and other threats as they are discovered. It is important to install updates for all the software that is installed in your computer. These are usually available from vendor Web sites.
 
You can use the Automatic Updates feature in Windows to automatically download future Microsoft security updates while your computer is on and connected to the Internet.
Use up-to-date antivirus software
Most antivirus software can detect and prevent infection by known malicious software. To help protect you from infection, you should always run antivirus software, such as Microsoft Security Essentials, that is updated with the latest signature files. For more information, see http://www.microsoft.com/protect/computer/viruses/vista.mspx.
Use caution when opening attachments and accepting file transfers
Exercise caution with e-mail and attachments received from unknown sources, or received unexpectedly from known sources.  Use extreme caution when accepting file transfers from known or unknown sources.
Use caution when clicking on links to Web pages
Exercise caution with links to Web pages that you receive from unknown sources, especially if the links are to a Web page that you are not familiar with, unsure of the destination of, or suspicious of. Malicious software may be installed in your system simply by visiting a Web page with harmful content.
Avoid downloading pirated software
Threats may also be bundled with software and files that are available for download on various torrent sites. Downloading "cracked" or "pirated" software from these sites carries not only the risk of being infected with malware, but is also illegal. For more information, see 'The risks of obtaining and using pirated software'.
Protect yourself from social engineering attacks
While attackers may attempt to exploit vulnerabilities in hardware or software in order to compromise a system, they also attempt to exploit vulnerabilities in human behavior in order to do the same. When an attacker attempts to take advantage of human behavior in order to persuade the affected user to perform an action of the attacker's choice, it is known as 'social engineering'. Essentially, social engineering is an attack against the human interface of the targeted system. For more information, see 'What is social engineering?'.
Use strong passwords
Attackers may try to gain access to your Windows account by guessing your password. It is therefore important that you use a strong password – one that cannot be easily guessed by an attacker. A strong password is one that has at least 8 characters, and combines letters, numbers, and symbols. For more information, see http://www.microsoft.com/protect/yourself/password/create.mspx.

Alert level: Low
This entry was first published on: Jan 20, 2010
This entry was updated on: Apr 17, 2011

This threat is also detected as:
  • Trojan:Win32/FakeXPA (Microsoft)
  • Antivirus 2010 (other)