TROJ_FAKESYS.AK

This Trojan displays a Graphical User Interface (GUI).

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

It deletes the initially executed copy of itself.

This Trojan may be dropped by other malware.

It does not have any propagation routine.

It does not have any backdoor routine.

It modifies the Internet Explorer Zone Settings.

It does not have any downloading capability.

It does not have any information-stealing capability.

Arrival Details

This Trojan may be dropped by the following malware:

• TROJ_FAKESYS.AJ

Installation

This Trojan drops the following non-malicious files:

• %System Root%\Documents and Settings\All Users\Application Data\{random filename}
• %User Profile%\Application Data\Microsoft\Internet Explorer\Quick Launch\System Restore.lnk
• %Desktop%\System Restore.lnk
• %Start Menu%\Programs\System Restore\System Restore.lnk
• %Start Menu%\Programs\System Restore\Uninstall System Restore.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 filename}.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 Restore

(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:

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.

Backdoor Routine

This Trojan does not have any backdoor 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.

NOTES:

Rootkit Capabilities

This malware does not have rootkit capabilities.

Other Details

It displays the following Graphical User Interface (GUI):

When users agree to buy the software, it connects to the following URL to continue the purchase:

• {BLOCKED}igger.com
• {BLOCKED}gs-866650.com
• {BLOCKED}-304200.com
• {BLOCKED}76421.com
• {BLOCKED}tor.com
• {BLOCKED}22866.com

It deletes the initially executed copy of itself