Submission Summary:

• Submission details:
• Submission received: 12 December 2011, 03:21:35
• Processing time: 10 min 4 sec
• Submitted sample:
• File MD5: 0xE7D52B05B199D7CB1E3C09A0C3DD4439
• File SHA-1: 0x007E7F7572B1CB437EB84F94ABA1647A0DECF874
• Filesize: 1,929,539 bytes
• Alias & packer info:
• Malware.Imaut [PCTools]
• W32.Imaut!gen1 [Symantec]
• Trojan-Downloader.Win32.AutoIt.jj [Kaspersky Lab]
• Mal/Generic-L [Sophos]
• Worm.Win32.AutoIt [Ikarus]
• packed with: UPX [Kaspersky Lab]

• Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Modifies some system settings that may have negative impact on overall system security state.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

• Attention! The following threat categories were identified:

Threat Category	Description
	A program that downloads files to the local computer that may represent security risk
	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 files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Windir%\SSVICHOSST.exe [file and pathname of the sample #1] %System%\SSVICHOSST.exe	1,929,539 bytes	MD5: 0xE7D52B05B199D7CB1E3C09A0C3DD4439 SHA-1: 0x007E7F7572B1CB437EB84F94ABA1647A0DECF874	Malware.Imaut [PCTools] W32.Imaut!gen1 [Symantec] Trojan-Downloader.Win32.AutoIt.jj [Kaspersky Lab] Mal/Generic-L [Sophos] Worm.Win32.AutoIt [Ikarus] packed with UPX [Kaspersky Lab]
2	%System%\autorun.ini	109 bytes	MD5: 0x43B9DFD6E61EBA0DDA808AB0F5F966AA SHA-1: 0xFFDCA1842198D91DAE7C98E862704EA80235894B	Trojan.Generic [PCTools] Trojan Horse [Symantec] Trojan.Win32.AutoRun.a [Kaspersky Lab] W32/Hakaglan.inf [McAfee] W32/AutoIt-IL [Sophos]
3	%System%\setting.ini	11,051 bytes	MD5: 0xB24662824F3E59D2DC04ACBA456C5685 SHA-1: 0xD71F4C8F69DC85BF9E9DE8A1916CFFED9CD7301E	(not available)
4	%Windir%\Tasks\At1.job	354 bytes	MD5: 0x393005E7E4D13DFE45AB67AD29081492 SHA-1: 0x02B9FC107345F2A57EFFBEB5FF77E2E13E4521CC	(not available)

• Notes:
• %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
[filename of the sample #1]	[file and pathname of the sample #1]	868,352 bytes
SSVICHOSST.exe	%System%\ssvichosst.exe	868,352 bytes
SSVICHOSST.exe	%Windir%\ssvichosst.exe	868,352 bytes

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer
• HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Internet Explorer\Control Panel
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
• HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer
• HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel

• The newly created Registry Values are:
• [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
• NofolderOptions = 0x00000001

to remove the Folder Options item from all Windows Explorer menus and from Control Panel

• [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System]
• DisableTaskMgr = 0x00000001
• DisableRegistryTools = 0x00000001

to prevent users from starting Task Manager (Taskmgr.exe)
to disable the Windows registry editors (Regedt32.exe and Regedit.exe)

• [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
• Yahoo Messengger = "%System%\SSVICHOSST.exe"

so that SSVICHOSST.exe runs every time Windows starts

• The following Registry Values were modified:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main]
• Default_Page_URL =
• Default_Search_URL =
• Search Page =
• Start Page =
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
• Shell =
• [HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]
• Start Page =

Other details

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

	United Kingdom

• The following ports were open in the system:

• There were registered attempts to establish connection with the remote hosts. The connection details are:

• The data identified by the following URLs was then requested from the remote web server:
• http://rnd009.t35.com/setting.ini
• http://free.t35hosting.com/