Submission Summary:

• Submission details:
• Submission received: 17 September 2012, 13:54:58
• Processing time: 10 min 44 sec
• Submitted sample:
• File MD5: 0x81975D4FD370101EC9823610EE08A235
• File SHA-1: 0x0B3F5ACD30833354E46F5FA2902D8E19C01FD351
• Filesize: 1,572,675 bytes
• Alias & packer info:
• W32.Imaut!gen1 [Symantec]
• Trojan-Downloader.Win32.AutoIt.jj [Kaspersky Lab]
• 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	1,572,675 bytes	MD5: 0x81975D4FD370101EC9823610EE08A235 SHA-1: 0x0B3F5ACD30833354E46F5FA2902D8E19C01FD351	W32.Imaut!gen1 [Symantec] Trojan-Downloader.Win32.AutoIt.jj [Kaspersky Lab] Worm.Win32.AutoIt [Ikarus] packed with UPX [Kaspersky Lab]
2	%System%\autorun.ini	109 bytes	MD5: 0x43B9DFD6E61EBA0DDA808AB0F5F966AA SHA-1: 0xFFDCA1842198D91DAE7C98E862704EA80235894B	Trojan Horse [Symantec] Trojan.Win32.AutoRun.a [Kaspersky Lab] W32/Hakaglan.inf [McAfee] W32/AutoIt-IL [Sophos]
3	%Windir%\Tasks\At1.job	354 bytes	MD5: 0x435DBD7C5654AF7BF6423EDC6247E181 SHA-1: 0x66AD5FF5F5492F556DFCE5105A945A08C1325A5D	(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]	864,256 bytes
SSVICHOSST.exe	%System%\ssvichosst.exe	864,256 bytes
SSVICHOSST.exe	%Windir%\ssvichosst.exe	864,256 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

• To mark the presence in the system, the following Mutex object was created:
• _!SHMSFTHISTORY!_

• The following Internet Connection was established:

• The following GET requests were made:
• google.html
• index.jpg

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