TSPY_ZBOT.SMA7

This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It executes then deletes itself afterward.

It modifies the Internet Explorer Zone Settings.

Arrival Details

This spyware 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 spyware drops the following files:

• %Application Data%\{random folder 2}\{random file name 2}.{random extension name}
• %Application Data%\{random folder 3}\{random file name 3}.{random extension 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, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It drops the following copies of itself into the affected system:

• %Application Data%\{random folder 1}\{random file name 1}.exe

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

It creates the following folders:

• %Application Data%\{random folder 1}
• %Application Data%\{random folder 2}
• %Application Data%\{random folder 3}

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

It executes then deletes itself afterward.

Autostart Technique

This spyware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random} = "%Application Data%\{random folder 1}\{random file name 1}.exe"

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
{random key}

Web Browser Home Page and Search Page Modification

This spyware modifies the Internet Explorer Zone Settings.

Other Details

This spyware connects to the following possibly malicious URL:

• {BLOCKED}a.ru
• {BLOCKED}att.ru
• {BLOCKED}tupa.com
• {BLOCKED}ock.ru
• {BLOCKED}m.{BLOCKED}o.am
• {BLOCKED}n.ru
• {BLOCKED}akt2.ru
• { BLOCKED}m.ru
• {BLOCKED}imus.ru
• {BLOCKED}n.org
• {BLOCKED}.{BLOCKED}ka.ru
• {BLOCKED}kirovatdostup.ru
• http://{random}.com/{random}/{random}.php
• http://{BLOCKED}b.{BLOCKED}up.com/web/newsfeeds.php