TROJ_FAKEAV.JSY

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.

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:

• %User Profile%\Antivirus Protection 2012\securityhelper.exe

(Note: %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.)

It creates the following folders:

• %Start Menu%\Programs\Antivirus Protection 2012
• %User Profile%\Application Data\Antivirus Protection 2012

(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.. %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.)

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\Run
98fvq9usfw47 = "{malware path and file name}"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Antivirus Protection 2012 SM = "%User Profile%\Antivirus Protection 2012\securitymanager.exe"

Other System Modifications

This Trojan deletes the following files:

• {malware path and file name}:zone.identifier
• %User Profile%\Antivirus Protection 2012\securityhelper.exe

(Note: %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.)

Dropping Routine

This Trojan drops the following files:

• %User Temp%\_1.tmpac7d.exe
• %Start Menu%\Programs\Antivirus Protection 2012.lnk
• %Desktop%\Antivirus Protection 2012.lnk
• %Start Menu%\Programs\Antivirus Protection 2012\Antivirus Protection 2012.lnk
• %Start Menu%\Programs\Antivirus Protection 2012\Activate Antivirus Protection 2012.lnk
• %Start Menu%\Programs\Antivirus Protection 2012\How to Activate Antivirus Protection 2012.lnk
• %Start Menu%\Programs\Antivirus Protection 2012\Help Antivirus Protection 2012.lnk
• %User Profile%\Quick Launch\Antivirus Protection 2012.lnk
• %User Profile%\Antivirus Protection 2012\IcoActivate.ico
• %User Profile%\Antivirus Protection 2012\IcoHelp.ico
• %User Profile%\Antivirus Protection 2012\IcoUninstall.ico
• %User Profile%\Antivirus Protection 2012\AntivirusProtection2012.exe
• %User Profile%\Antivirus Protection 2012\securitymanager.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp 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.. %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.. %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.)

This report is generated via an automated analysis system.