TROJ_FAKEAV.CXJ

This Trojan does not have rootkit capabilities.

It does not exploit any vulnerability.

When users agree to buy the software, it connects to certain URLs.

This Trojan may be dropped by other malware.

It does not have any propagation routine.

It modifies the Internet Explorer Zone Settings.

It does not have any downloading capability.

It does not have any information-stealing capability.

It deletes the initially executed copy of itself.

It displays fake alerts that warn users of infection. It also displays fake scanning results of the affected system. It then asks for users to purchase it once scanning is completed. If users decide to purchase the rogue product, users are directed to a certain website asking for sensitive information, such as credit card numbers.

Arrival Details

This Trojan may be dropped by the following malware:

• TROJ_FAKEAV.CXI

Installation

This Trojan drops the following non-malicious files:

• %System Root%\Documents and Settings\All Users\Application Data\{Random File Name}
• %System Root%\Documents and Settings\All Users\Application Data\~{Random File Name}
• %System Root%\Documents and Settings\All Users\Application Data\~{Random File Name}r
• %User Profile%\Application Data\Microsoft\Internet Explorer\Quick Launch\System Fix.lnk
• %Desktop%\System Fix.lnk
• %Start Menu%\Programs\System Fix\System Fix.lnk
• %Start Menu%\Programs\System Fix\Uninstall System Fix.lnk

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %Desktop% is the current user's desktop, which is usually C:\Windows\Profiles\{user name}\Desktop on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Desktop on Windows NT, and C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.)

It drops the following copies of itself into the affected system:

• %System Root%\Documents and Settings\All Users\Application Data\{Random File Name}.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It creates the following folders:

• %Start Menu%\Programs\System Fix

(Note: %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Profiles\{user name}\Start Menu on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu on Windows NT and C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003.)

Other System Modifications

This Trojan adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Use FormSuggest = "Yes"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
WarnOnZoneCrossing = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
WarnonBadCertRecving = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
CertificateRevocation = "0"

Propagation

This Trojan does not have any propagation routine.

Web Browser Home Page and Search Page Modification

This Trojan modifies the Internet Explorer Zone Settings.

Download Routine

This Trojan does not have any downloading capability.

Information Theft

This Trojan does not have any information-stealing capability.

Other Details

This Trojan deletes the initially executed copy of itself

Rogue Antivirus Routine

This Trojan displays fake alerts that warn users of infection. It also displays fake scanning results of the affected system. It then asks for users to purchase it once scanning is completed. If users decide to purchase the rogue product, users are directed to a certain website asking for sensitive information, such as credit card numbers.

NOTES:

It does not have rootkit capabilities.

It does not exploit any vulnerability.

When users agree to buy the software, it connects to the following URLs:

• http://{domain name}/britix/a
• http://{domain name}/britix/ar
• http://{domain name}/up.php?{random}
• http://{domain name}/buy.php?{random}

{domain name} can be any of the following:

• {BLOCKED}iclube.com
• {BLOCKED}3890.com
• {BLOCKED}advanta.com
• {BLOCKED}alionsup.com
• {BLOCKED}tybask.com
• {BLOCKED}oveinis.com
• {BLOCKED}golfub.com