TSPY_MINOCDO.A

This malware intercepts network traffic accessing Facebook and redirects it to a fraudulent page that will lead users in entering their credit card information. Users affected by this malware may find their financial accounts compromised.

To get a one-glance comprehensive view of the behavior of this Spyware, refer to the Threat Diagram shown below.

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 modifies the affected system's HOSTS files. This prevents users from accessing certain websites.

It retrieves specific information from the affected system.

It connects to certain websites to send and receive information.

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 adds the following folders:

• {OS depended directory}\cddnivot

It drops the following component file(s):

• {OS dependent directory}\cddnivot\cfg - encrypted config file
• {OS dependent directory}\cddnivot\etc
• {OS dependent directory}\cddnivot\ihst
• {OS dependent directory}\cddnivot\lck
• {OS dependent directory}\cddnivot\por
• {OS dependent directory}\cddnivot\rng
• {OS dependent directory}\cddnivot\run
• {OS dependent directory}\cddnivot\tst

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

• {OS dependent directory}\capbepfn.exe
• {OS dependent directory}\azlwpsbcwya.exe
• %User Temp%\i5wfyrpl{random characters}.exe
• %Temp%\i5wfyrpl{random characters}.exe - for Windows OS other than Vista and 7

(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.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)

Autostart Technique

This spyware registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\UserMode Protection PNRP Services Machine Remote
Type = "110"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\UserMode Protection PNRP Services Machine Remote
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\UserMode Protection PNRP Services Machine Remote
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\UserMode Protection PNRP Services Machine Remote
ImagePath = "%System%\capbepfn.exe"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\UserMode Protection PNRP Services Machine Remote
DisplayName = "UserMode Protection PNRP Services Machine Remote"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\UserMode Protection PNRP Services Machine Remote
ObjectName = "LocalSystem"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Browser Studio WWAN Installer Location = "%System%\capbepfn.exe"

It registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\UserMode Protection PNRP Services Machine Remote

It drops the following file(s) in the Windows Startup folder to enable its automatic execution at every system startup:

• %User Startup%\capbepfn.exe

(Note: %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.)

HOSTS File Modification

This spyware modifies the affected system's HOSTS files to prevent a user from accessing the following websites:

• 127.0.0.1 www.facebook.com
• 127.0.0.1 facebook.com

Information Theft

This spyware s configuration file contains the following information:

• Other URLs to access
• URL to Intercept
• URL for Redirection

It retrieves the following information from the affected system:

• CPU Information
• Notification of the affected system's successful C&C server connection

Stolen Information

This spyware sends the gathered information via HTTP POST to the following URL:

• http://{BLOCKED}ernothing.net/fb/?session={session number}

Other Details

This spyware connects to the following website to send and receive information:

• http://{BLOCKED}cclub-grup.com

NOTES:

Where {OS dependent directory} can be:

• %System% - for Windows OS other than Vista and 7
• %AppDataLocal% - for Windows Vista and 7

In performs DNS Query to the following URLs just in case the URLs stated above are inaccessible:

• http://{BLOCKED}tarimagine.com
• http://{BLOCKED}ince.net
• http://{BLOCKED}ce.net
• http://{BLOCKED}age.net
• http://{BLOCKED}ge.net
• http://{BLOCKED}oice.net
• http://{BLOCKED}ice.net
• http://{BLOCKED}ive.net
• http://{BLOCKED}ve.net
• http://{BLOCKED}ight.net
• http://{BLOCKED}ght.net
• http://{BLOCKED}ey.net
• http://{BLOCKED}ice.net
• http://{BLOCKED}oice.net
• http://{BLOCKED}ve.net
• http://{BLOCKED}ive.net
• http://{BLOCKED}ght.net
• http://{BLOCKED}ight.net
• http://{BLOCKED}ey.net
• http://{BLOCKED}hey.net
• http://{BLOCKED}ice.net
• http://{BLOCKED}oice.net
• http://{BLOCKED}ve.net
• http://{BLOCKED}ive.net
• http://{BLOCKED}eight.net
• http://{BLOCKED}ight.net
• http://{BLOCKED}ey.net
• http://{BLOCKED}hey.net
• http://{BLOCKED}oice.net
• http://{BLOCKED}tio.com
• http://{BLOCKED}ojo.com
• http://{BLOCKED}tol.com
• http://{BLOCKED}ia.com
• http://{BLOCKED}ereforyounow.com
• http://{BLOCKED}ter.com
• http://{BLOCKED}eearly.net

It redirects network traffic accessing http://facebook.com to http://{BLOCKED}ernothing.net/fb which is displayed in the address bar as http://facebook.com/{BLOCKED}nge disguised as a Facebook Security page where unsuspecting users may enter their Credit Card Information.