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

File Size: Varies
File Type: EXE
Initial Samples Received Date: 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