Analysis by: Roland Marco Dela Paz
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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 connects to certain websites to send and receive information.

  TECHNICAL DETAILS

Tamaño del archivo Varies
Tipo de archivo EXE
Fecha de recepción de las muestras iniciales 17 Feb 2012

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 component file(s):

  • %User Profile%\Application Data\Antivirus Protection\IcoActivate.ico
  • %User Profile%\Application Data\Antivirus Protection\IcoHelp.ico
  • %User Profile%\Application Data\Antivirus Protection\IcoUninstall.ico
  • %User Profile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Antivirus Protection.lnk
  • %Desktop%\Antivirus Protection.lnk
  • %Start Menu%\Programs\Antivirus Protection\Activate Antivirus Protection.lnk
  • %Start Menu%\Programs\Antivirus Protection\Antivirus Protection.lnk
  • %Start Menu%\Programs\Antivirus Protection\Help Antivirus Protection.lnk
  • %Start Menu%\Programs\Antivirus Protection\How to Activate Antivirus Protection.lnk
  • %Start Menu%\Programs\Antivirus Protection.lnk

(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.. %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:

  • %User Profile%\Application Data\Antivirus Protection\AntivirusProtection2012.exe
  • %User Profile%\Application Data\Antivirus Protection\securityhelper.exe
  • %User Profile%\Application Data\Antivirus Protection\securitymanager.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
  • %User Profile%\Application Data\Antivirus Protection

(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
seq2p5uwcdww = "{malware path and file name}"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Antivirus Protection = "%User Profile%\Application Data\Antivirus Protection\AntivirusProtection2012.exe" /STARTUP

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

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Antivirus Protection

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Uninstall\
Antivirus Protection

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess
Start = "4"

(Note: The default value data of the said registry entry is 2.)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\wscsvc
Start = "4"

(Note: The default value data of the said registry entry is 2.)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\wuauserv
Start = "4"

(Note: The default value data of the said registry entry is 2.)

Other Details

This Trojan connects to the following website to send and receive information:

  • http://{BLOCKED}ise-web1.in