Submission Summary:

• Submission details:
• Submission received: 25 October 2012, 10:33:46
• Processing time: 9 min 17 sec
• Submitted sample:
• File MD5: 0x0309682C16890412E48E92F148395284
• File SHA-1: 0xD698514DCCDF765F7490084B86D47524011EA193
• Filesize: 339,837 bytes
• Alias & packer info:
• Backdoor.Win32.Bifrose [Ikarus]
• packed with: PECompact [Kaspersky Lab]

• Summary of the findings:

What's been found	Severity Level
Produces outbound traffic.
Creates a startup registry entry.

Technical Details:

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%ProgramFiles%\Bifrost\logg.dat	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
2	%ProgramFiles%\Bifrost\server.exe	339,837 bytes	MD5: 0x0309682C16890412E48E92F148395284 SHA-1: 0xD698514DCCDF765F7490084B86D47524011EA193	Backdoor.Win32.Bifrose [Ikarus] packed with PECompact [Kaspersky Lab]

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

• The following directory was created:
• %ProgramFiles%\Bifrost

Memory Modifications

• There were new processes created in the system:

Process Name	Process Filename	Main Module Size
server.exe	%ProgramFiles%\bifrost\server.exe	733,184 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	733,184 bytes

• Attention! The following processes were intentionally hidden from the user:

Process Name	Main Module Size
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{9D71D88C-C598-4935-C5D1-43AA4DB90836}
• HKEY_LOCAL_MACHINE\SOFTWARE\Bifrost
• HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MediaResources\msvideo
• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources\msvideo
• HKEY_CURRENT_USER\Software\Bifrost

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{9D71D88C-C598-4935-C5D1-43AA4DB90836}]
• stubpath = "%ProgramFiles%\Bifrost\server.exe s"

so that server.exe runs every time Windows starts

• [HKEY_LOCAL_MACHINE\SOFTWARE\Bifrost]
• nck = ED 1B E6 27 B9 28 D6 32 74 C3 CD 74 FA 93 5B 67
• [HKEY_CURRENT_USER\Software\Bifrost]
• klg = 01

Other details

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

	Russian Federation

• To mark the presence in the system, the following Mutex object was created:
• Bif1234

• The following Host Name was requested from a host database:
• comptessaie.no-ip.org

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

• 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

Outbound traffic (potentially malicious)

• There was an outbound traffic produced on port 81: