TROJ_FAKEAV.TUE

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It does not have any propagation routine.

It does not have any backdoor routine.

It does not have any downloading capability.

When users agree to buy the software, it connects to a certain URL. It displays a window where users can purchase this fake antivirus program.

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following copies of itself into the affected system:

• %All Users Profile%\Application Data\{random folder name}\{random file name}.exe

(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)

It drops the following files:

• %All Users Profile%\Application Data\{random folder name}\{random file name}.ico
• %Desktop%\System Care Antivirus.lnk
• %Start Menu%\Programs\System Care Antivirus\System Care Antivirus.lnk
• %All Users Profile%\Application Data\{random folder name}\{random file name}

(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista and 7.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.)

It creates the following folders:

• %Start Menu%\Programs\System Care Antivirus
• %All Users Profile%\Application Data\{random folder name}

(Note: %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.. %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\RunOnce
{random file name} = "%All Users Profile%\Application Data\{random folder name}\{random file name}.exe"

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\{random key}

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\{random key}
(Default) = "1"

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Download Routine

This Trojan does not have any downloading capability.

Rogue Antivirus Routine

This Trojan displays the following fake alerts:

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

• http://{BLOCKED}ersec.com/p/?{parameters}
• http://{BLOCKED}unit.com/p/?{parameters}
• http://{BLOCKED}esoft.com/?{parameters}
• http://{BLOCKED}rs.com/p/?{parameters}
• http://{BLOCKED}rketpay.com/p/?{parameters}
• http://{BLOCKED}oint.com/p/? {parameters}
• http://{BLOCKED}ysafe.com/p/?{parameters}
• http://{BLOCKED}ter.com/p/?{parameters}

The following window is displayed for users to purchase the fake antivirus program:

• 
• It may show other window, however some are inaccessible as of this writing.

It displays the following window and pretends to scan the system:

NOTES:

It terminates process except for the following:

• SearchProtocolHost.exe
• aeadisrv.exe
• alg.exe
• audiodg.exe
• avapro.exe
• cleaner.exe
• conhost.exe
• csrss.exe
• ctfmon.exe
• diskavpro.exe
• dllhost.exe
• driverquery.exe
• dwm.exe
• explorer.exe
• httpd.exe
• iastordatamgrsvc.exe
• iexplore.exe
• iexplorer.exe
• livesp.exe
• lsass.exe
• lsm.exe
• makecab.exe
• mdnsresponder.exe
• mfnsvc.exe
• msdtc.exe
• nvscpapisvr.exe
• nvsvc.exe
• nvvsvc.exe
• outlook.exe
• pdagent.exe
• relver.exe
• rundll32.exe
• scarav.exe
• searchindexer.exe
• services.exe
• slsvc.exe
• smartfortress.exe
• smss.exe
• snort.exe
• spoolsv.exe
• svchost.exe
• system
• systeminfo.exe
• taskhost.exe
• tasklist.exe
• vmtoolsd.exe
• werfault.exe
• wininit.exe
• winlogon.exe
• winmail.exe
• winroute.exe
• wlmail.exe
• wmiprvse.exe
• wmpnetwk.exe
• wscntfy.exe
• wuauclt.exe

It connects to the following URL to notify the malicious user that the FAKEAV variant has been installed and to notify the malicious user where the malware sent the credit card information entered by the victim:

• http://{BLOCKED}.{BLOCKED}.29.179/api/dom/no_respond/?ts={value1}&token={value3}&affid={value2}&ver={value4}
• http://{BLOCKED}.{BLOCKED}.29.179/api/urls/?ts={value1}&affid={value2}

It does not have rootkit capabilities.

It does not exploit any vulnerability.