TSPY_BOZEEP.P
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
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.
SOLUTION
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Restart in Safe Mode
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- cleanddm = "%Application Data%\cleanddm.exe"
- cleanddm = "%Application Data%\cleanddm.exe"
Step 4
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_BOZEEP.P. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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