Submission Summary:

• Submission details:
• Submission received: 6 August 2012, 18:44:37
• Processing time: 9 min 0 sec
• Submitted sample:
• File MD5: 0x4EDDB620207DDFA7BB3AA34879239AC5
• File SHA-1: 0x2FA075BB603EC7621870078CD8D05E7E938C36C2
• Filesize: 21,504 bytes
• Alias & packer info:
• Suspicious.MH690 [Symantec]
• Backdoor.Win32.Xtreme.azc [Kaspersky Lab]
• Mal/DelfInj-A [Sophos]
• Backdoor.Win32.Xtreme [Ikarus]
• packed with: UPX [Kaspersky Lab]

Technical Details:

Possible Security Risk

• Attention! The following threat category was identified:

Threat Category	Description
	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	%AppData%\Microsoft\Windows\((Mutex)).cfg	2,032 bytes	MD5: 0x52496715910BFC42615B796551CC1F2D SHA-1: 0xC7CB6FB651B1557A57DA1158E9037F9815092E2A	(not available)
2	%AppData%\Microsoft\Windows\((Mutex)).dat	2 bytes	MD5: 0x84CAD01FDB44AE58DBE6C3973DCD87F5 SHA-1: 0x4700B42849FB35BE323774820BF1BC8019D26C80	(not available)
3	%Windir%\InstallDir\Server.exe [file and pathname of the sample #1]	21,504 bytes	MD5: 0x4EDDB620207DDFA7BB3AA34879239AC5 SHA-1: 0x2FA075BB603EC7621870078CD8D05E7E938C36C2	Suspicious.MH690 [Symantec] Backdoor.Win32.Xtreme.azc [Kaspersky Lab] Mal/DelfInj-A [Sophos] Backdoor.Win32.Xtreme [Ikarus] packed with UPX [Kaspersky Lab]

• Notes:
• %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.
• %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

• The following directory was created:
• %Windir%\InstallDir

Memory Modifications

• There were new processes created in the system:

Process Name	Process Filename	Main Module Size
iexplore.exe	%ProgramFiles%\Internet Explorer\iexplore.exe	102,400 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	90,112 bytes
server.exe	%Windir%\installdir\server.exe	90,112 bytes

• Notes:
• %ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}
• HKEY_CURRENT_USER\Software\((Mutex))

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}]
• StubPath = "%Windir%\InstallDir\Server.exe restart"

so that Server.exe runs every time Windows starts

• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
• HKLM = "%Windir%\InstallDir\Server.exe"

so that Server.exe runs every time Windows starts

• [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
• HKCU = "%Windir%\InstallDir\Server.exe"

so that Server.exe runs every time Windows starts

• [HKEY_CURRENT_USER\Software\((Mutex))]
• ServerStarted = "8/6/2012 18:44:41 PM"
• InstalledServer = "%Windir%\InstallDir\Server.exe"

Other details

• To mark the presence in the system, the following Mutex objects were created:
• ((Mutex))
• XTREMEUPDATE

• The data identified by the following URL was then requested from the remote web server:
• http://benglay.no-ip.biz:81/1234567890.functions

• There was application-defined hook procedure installed into the hook chain (e.g. to monitor keystrokes). The installed hook is handled by the following module:
• %ProgramFiles%\Internet Explorer\iexplore.exe