TROJ_SPAMTHRU.AU

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 creates the following folders:

• %User Temp%\$inst
• %Program Files%\.\amine

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

Other System Modifications

This Trojan deletes the following files:

• %User Temp%\$inst\0.tmp
• %User Temp%\$inst\1.tmp
• %User Temp%\$inst\3.tmp
• %User Temp%\$inst\4.tmp
• %User Temp%\$inst\5.tmp
• %User Temp%\$inst\6.tmp
• %User Temp%\$inst\7.tmp
• %User Temp%\$inst\8.tmp
• %User Temp%\$inst\9.tmp
• %User Temp%\$inst\10.tmp
• %User Temp%\$inst\11.tmp
• %User Temp%\$inst\12.tmp
• %User Temp%\$inst\13.tmp
• %User Temp%\$inst\14.tmp
• %User Temp%\$inst\15.tmp
• %User Temp%\$inst\16.tmp
• %User Temp%\$inst\17.tmp
• %User Temp%\$inst\20.tmp
• %User Temp%\$inst\50.tmp
• %User Temp%\$inst\21.tmp
• %User Temp%\$inst\51.tmp

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
amine 1.00

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
amine 1.00
DisplayName = "amine 1.00"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
amine 1.00
DisplayIcon = "%Program Files%\.\amine\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
amine 1.00
UninstallString = "%Program Files%\.\amine\Uninstall.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
amine 1.00
NoModify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Uninstall\
amine 1.00
NoRepair = "1"

Dropping Routine

This Trojan drops the following files:

• %User Temp%\$inst\2.tmp
• %User Temp%\$inst\temp_0.tmp
• %Program Files%\.\amine\Uninstall.ini

(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

This report is generated via an automated analysis system.