TSPY_ZBOT.XMAS

This spyware uses social engineering methods to lure users into performing certain actions that may, directly or indirectly, cause malicious routines to be performed. Specifically, it disguises as a Christmas card to trick users into thinking that the website they are accessing is non-malicious. 0

This spyware may be dropped by other malware.

It may be unknowingly downloaded by a user while visiting malicious websites.

It may be downloaded from remote site(s) by the following malware:

• HTML_IFRAME.SMAX

It may be unknowingly downloaded by a user while visiting the following malicious websites:

• http://{BLOCKED}developersdk.com/wp-admin/includes/card.zip

Installation

This spyware creates the following folders:

• %System%\lowsec

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

• _AVIRA_2109

It drops the following files:

• %System%\lowsec\local.ds - copy of the encrypted downloaded file
• %System%\lowsec\user.ds.lll
• %System%\lowsec\user.ds - used to save the gathered information
• %system%\sdra64.exe - copy of itself

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

It is injected into the following processes running in memory:

• WINLOGON.EXE
• SVCHOST.EXE

Autostart Technique

This spyware modifies the following registry entry(ies) to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
Userinit = %System%\userinit.exe, %System%\sdra64.exe,

(Note: The default value data of the said registry entry is %System%\userinit.exe,.)

Other System Modifications

This spyware creates the following registry entry(ies) to bypass Windows Firewall:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
EnableFirewall = 0

It adds the following registry keys as part of its installation routine:

HKEY_USERS\.DEFAULT\Software\
Microsoft\ Windows\CurrentVersion\
Explorer\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}

HKEY_USERS\.DEFAULT\Software\
Microsoft\ Windows\CurrentVersion\
Explorer\{19127AD2-394B-70F5-C650-B97867BAA1F7}

HKEY_USERS\.DEFAULT\Software\
Microsoft\Protected Storage System Provider

It adds the following registry entries as part of its installation routine:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Network
UID = {computer name}_{random numbers}

Download Routine

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

• http://{BLOCKED}anvik.no/templates/system/sysny.bin

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 downloads
• 127.0.0.1 downloads
• 127.0.0.1 downloads
• 127.0.0.1 downloads
• 127.0.0.1 downloads
• 127.0.0.1 rads.mcaf
• 127.0.0.1 liveupdat
• 127.0.0.1 liveupdat
• 127.0.0.1 liveupdat
• 127.0.0.1 update.sy
• 127.0.0.1 download7
• 127.0.0.1 download6
• 127.0.0.1 download5
• 127.0.0.1 download4
• 127.0.0.1 download3
• 127.0.0.1 download2
• 127.0.0.1 download1
• 127.0.0.1 avu.zonel
• 127.0.0.1 retail.sp
• 127.0.0.1 retail01.
• 127.0.0.1 retail02.
• 127.0.0.1 acs.panda
• 127.0.0.1 pccreg.an
• 127.0.0.1 dl1.antiv
• 127.0.0.1 dl2.antiv
• 127.0.0.1 dl3.antiv
• 127.0.0.1 dl4.antiv
• 127.0.0.1 fr.mcafee
• 127.0.0.1 mcafee.co
• 127.0.0.1 antivirus
• 127.0.0.1 ftp.esafe
• 127.0.0.1 ftp.europ
• 127.0.0.1 ftp.syman
• 127.0.0.1 us.mcafee
• 127.0.0.1 security.
• 127.0.0.1 download.
• 127.0.0.1 shop.syma
• 127.0.0.1 dispatch.
• 127.0.0.1 f-secure.
• 127.0.0.1 kaspersky
• 127.0.0.1 mast.mcaf
• 127.0.0.1 secure.na
• 127.0.0.1 sophos.co

Information Theft

This spyware attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data.