Submission Summary:

• Submission details:
• Submission received: 18 September 2012, 16:53:45
• Processing time: 9 min 39 sec
• Submitted sample:
• File MD5: 0x370630D41E41C5443E65A1D0C99FEDA3
• File SHA-1: 0x992F1CBC89B588A380238F5245ABC93C604066CB
• Filesize: 212,992 bytes
• Alias:
• TROJ_BJLG.SMUS1 [Trend Micro]
• Trojan:Win32/Malex.gen!E [Microsoft]
• Trojan-Downloader.Win32.Small [Ikarus]

• Summary of the findings:

What's been found	Severity Level
Capability to modify the hosts file that may potentially block access to security-related Web sites.
Produces outbound traffic.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

• Attention! The following threat categories were identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
	A keylogger program that can capture all user keystrokes (including confidential details such username, password, credit card number, etc.)
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\svchost.exe %Windir%\FANS.exe %Windir%\HACK.exe [file and pathname of the sample #1]	212,992 bytes	MD5: 0x370630D41E41C5443E65A1D0C99FEDA3 SHA-1: 0x992F1CBC89B588A380238F5245ABC93C604066CB	TROJ_BJLG.SMUS1 [Trend Micro] Trojan:Win32/Malex.gen!E [Microsoft] Trojan-Downloader.Win32.Small [Ikarus]
2	%System%\yjsoft.ini	5,398,536 bytes	MD5: 0xC341BF10E60DE0655C4D1DC0307A79B2 SHA-1: 0xEE993E8617976EE2C0969F0EFB1A8D9D5DB212A0	Backdoor.Trojan [Symantec] Trojan-PSW.Win32.Bjlog.aago [Kaspersky Lab] BackDoor-TW.dll [McAfee] Mal/Zegost-E [Sophos] Backdoor:Win32/Zegost.L [Microsoft] Backdoor.Win32.Zegost [Ikarus]

• Notes:
• %Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).
• %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.
• %System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

Memory Modifications

• There were new processes created in the system:

Process Name	Process Filename	Main Module Size
svchost.exe	%Temp%\svchost.exe	221,184 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	221,184 bytes
fans.exe	%Windir%\fans.exe	221,184 bytes
hack.exe	%Windir%\hack.exe	221,184 bytes

• The following module was loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
yjsoft.ini	%System%\yjsoft.ini	Process name: svchost.exe Process filename: %Temp%\svchost.exe Address space: 0x20000000 - 0x20026AC8

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Com70
• HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MediaResources\msvideo
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources\msvideo

Other details

• Analysis of the file resources indicate the following possible country of origin:

	China

• To mark the presence in the system, the following Mutex object was created:
• Global\b16777343_2012j

• The following Host Name was requested from a host database:
• xlgzshi.vicp.net

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

Outbound traffic (potentially malicious)

• There was an outbound traffic produced on port 2012: