TrojanSpy.Win32.INFOSTEAL.MLLT

This Trojan Spy 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 Spy 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 Spy adds the following processes:

• "{malware file path and name}"
• "{malware file path and name}" 2 2968 27670231
• %Program Files%\Internet Explorer\iexplore.exe {malware file path and name}
• "{malware file path and name}" 2 3020 27676222
• "{malware file path and name}" 2 1580 27681510
• "{malware file path and name}" 2 1812 27685706
• "{malware file path and name}" 2 2320 27690184
• "{malware file path and name}" 2 2104 27694552
• "{malware file path and name}" 2 1624 27699450
• "{malware file path and name}" 2 2808 27710994
• "{malware file path and name}" 2 1712 27716376
• "{malware file path and name}" 2 1552 27720822
• "{malware file path and name}" 2 880 27725861
• "{malware file path and name}" 2 1668 27730526
• "{malware file path and name}" 2 1168 27735923
• "{malware file path and name}" 2 720 27742350

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

• %All Users Profile%\Microsoft\User Account Pictures

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

Other System Modifications

This Trojan Spy modifies the following file(s):

• %User Temp%\{username}.bmp

(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp 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\Wow6432Node\
Microsoft\Security Center
UACDisableNotify = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
EnableLUA = "0"

Dropping Routine

This Trojan Spy drops the following files:

• %User Temp%\{username}.bmp
• %User Temp%\ut
• %User Temp%\I3N7F4Q1-G886-H6L4-T4D2-R5G6A0T1T4B8.pas
• %User Temp%\I3N7F4Q1-G886-H6L4-T4D2-R5G6A0T1T4B8

(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(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Trojan Spy connects to the following possibly malicious URL:

• {BLOCKED}4.30.19

This report is generated via an automated analysis system.