TSPY_BOZEEP.P

This spyware remotely informs a malicious user of its installation by connecting to a certain URL. It then sends certain information to the said remote host via HTTP post for identification.

The .DLL component hooks certain API functions to hide traces of itself in the affected system. The .DLL component monitors access attempts to search websites. The data that the spyware steals are the topics searched by the affected user. Once an affected user access any of these websites, it redirects to a remote server. Stolen information are also sent to a server. However, all the URLs where the spyware connect or redirect are already inaccessible as of this writing.

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.

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 component file(s):

• %Application Data%\cleanddm.dll - also detected as TSPY_BOZEEP.P

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)

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

• %Application Data%\cleanddm.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)

Autostart Technique

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
cleanddm = "%Application Data%\cleanddm.exe"

NOTES:

Propagation

This spyware does not have any propagation routine.

Rootkit Capabilities

The .DLL component hooks the following API functions to hide traces of itself in the affected system:

• connect
• FindFirstFileA
• FindFirstFileW
• FindNextFileA
• FindNextFileW
• LdrLoadDll
• NtEnumerateValueKey
• NtQuerySystemInformation
• NtResumeThread

Information Theft

It remotely informs a malicious user of its installation by connecting to the following URL:

• http://{BLOCKED}7.64.186

It then sends the following information to the said remote host via HTTP post for identification:

• Computer name of the affected machine

The .DLL component monitors access attempts to the following search websites:

• www.bing.com
• www.google.com
• search.yahoo.com

The data that the spyware steals are the topics searched by the affected user.

Once an affected user access any of the aforementioned websites, it redirects to the following remote server. Stolen information are also sent to this server:

• {BLOCKED}.118.188

However, all the URLs where the spyware connect or redirect are already inaccessible as of this writing.

Download Routine

This spyware does not have any downloading capability.