Trojan.W97M.DLOADR.TIOIBEIN

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.

Other System Modifications

This Trojan modifies the following file(s):

• %Application Data%\Microsoft\Office\Word12.pip

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
CTF\TIP\{F25E9F57-2FC8-4EB3-A41A-CCE5F08541E6}\
LanguageProfile\0x00000409\{F2510000-2FC8-4EB3-A41A-CCE5F08541E6}
Enable = "1"

HKEY_CURRENT_USER\Software\Microsoft\
CTF\Assemblies\0x00000409\
{{GUID}}
Default = "{F25E9F57-2FC8-4EB3-A41A-CCE5F08541E6}"

HKEY_CURRENT_USER\Software\Microsoft\
CTF\Assemblies\0x00000409\
{{GUID}}
Profile = "{F2510000-2FC8-4EB3-A41A-CCE5F08541E6}"

HKEY_CURRENT_USER\Software\Microsoft\
CTF\Assemblies\0x00000409\
{{GUID}}
KeyboardLayout = "0"

Dropping Routine

This Trojan drops the following files:

• %Application Data%\Microsoft\Office\Word12.pip
• %Application Data%\Microsoft\UProof\CUSTOM.DIC
• {malware file path and name}

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Trojan connects to the following possibly malicious URL:

• http://store.{BLOCKED}ac.com
• http://go.{BLOCKED}oft.com

This report is generated via an automated analysis system.