Submission Summary:

• Submission details:
• Submission received: 22 May 2009, 04:43:07
• Processing time: 5 min 12 sec
• Submitted sample:
• File MD5: 0xF699946ECDE2C669ADFBBAF4F019FC03
• File SHA-1: 0xA122A4D47A63E8772EAD81A9400E75F4C3936FB7
• Filesize: 58,368 bytes
• Alias:
• Suspicious.MH690 [Symantec]
• Worm:Win32/Pushbot.gen!C [Microsoft]

• Summary of the findings:

What's been found	Severity Level
Communication with a remote IRC server.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

• Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Trojan-Downloader.Small.GEN	Trojan-Downloader.Small.GEN contacts remote servers in order to download additional malware onto a users computer without their knowledge.

• Attention! The following threat category was identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment

File System Modifications

• The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%AppData%\cftmon.exe [file and pathname of the sample #1]	58,368 bytes	MD5: 0xF699946ECDE2C669ADFBBAF4F019FC03 SHA-1: 0xA122A4D47A63E8772EAD81A9400E75F4C3936FB7	Suspicious.MH690 [Symantec] Worm:Win32/Pushbot.gen!C [Microsoft]

• Note:
• %AppData% is a variable that refers to the file system directory that serves as a common repository for application-specific data. A typical path is C:\Documents and Settings\[UserName]\Application Data.

Memory Modifications

• There were new processes created in the system:

Process Name	Process Filename	Main Module Size
cftmon.exe	%AppData%\cftmon.exe	315,392 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	315,392 bytes

Registry Modifications

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
• Windows Live Messenger Service = "cftmon.exe"

so that cftmon.exe runs every time Windows starts

• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install\Software\Microsoft\Windows\CurrentVersion\Run]
• Windows Live Messenger Service = "cftmon.exe"

so that cftmon.exe runs every time Windows starts

Other details

• To mark the presence in the system, the following Mutex object was created:
• loel23wsd

• The following port was open in the system:

• The following Host Name was requested from a host database:
• main.updateserver.cn

• There was registered attempt to establish connection with the remote host. The connection details are:

Outbound traffic (potentially malicious)

• Attention! There was a new connection established with a remote IRC Server. The generated outbound IRC traffic is provided below: