TSPY_ZBOT.XCQ

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 may create registry entries under a certain registry key.

It deletes the initially executed copy of itself.

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 copies of itself into the affected system:

• %Application Data%\{random folder name}\{random file name}.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 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 adds the following mutexes to ensure that only one of its copies runs at any one time:

• Global\{GUID}
• Local\{GUID}

It injects threads into the following normal process(es):

• explorer.exe

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 file name} = "%Application Data%\{random folder name}\{random file name}.exe"

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
{random}

HKEY_CURRENT_USER\Software\Microsoft\
WAB

It may create registry entries under the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
{random port 1}:UDP = "{random port 1}:UDP:*:Enabled:UDP {random port 1}"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
{random port 2}:TCP = "{random port 2}:TCP:*:Enabled:TCP {random port 2}"

Download Routine

This spyware connects to the following URL(s) to download its configuration file:

• http://{pseudorandom domain name}.info
• http://{pseudorandom domain name}.com
• http://{pseudorandom domain name}.biz
• http://{pseudorandom domain name}.net
• http://{pseudorandom domain name}.org
• http://{pseudorandom domain name}.ru

Information Theft

This spyware gathers the following data:

• Data on cookie files (URLs)
• FTP credentials
• Online banking credentials
• Flashplayer data
• Personal digital cerificates

Other Details

This spyware connects to the following URL(s) to check for an Internet connection:

• http://www.google.com
• http://www.bing.com

It deletes the initially executed copy of itself

NOTES:

The configuration file may contain the following information:

• Download link to an updated copy of itself
• Site(s) where it will send its stolen information
• Download link to an updated copy of its configuration file
• Configuration for stealing online banking account credentials (including targeted banks)