Submission Summary:

• Submission details:
• Submission received: 14 September 2012, 00:53:32
• Processing time: 7 min 33 sec
• Submitted sample:
• File MD5: 0xB79E2E38272BF0210CBAD3FC8527BEC4
• File SHA-1: 0x25A63805BDCF1095D8B36E00CA4EE2EC3CBC9C2D
• Filesize: 77,114 bytes
• Alias:
• Worm.Win32.Ngrbot.bzm [Kaspersky Lab]
• Mal/Inject-CEE [Sophos]
• Trojan:Win32/Injector.AB [Microsoft]
• Trojan.Win32.Injector [Ikarus]

Technical Details:

Possible Security Risk

• Attention! The following threat category was identified:

Threat Category	Description
	A network-aware worm that attempts to replicate across the existing network(s)

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\Bifrost\logg.dat	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
2	%System%\Bifrost\server.exe [file and pathname of the sample #1]	77,114 bytes	MD5: 0xB79E2E38272BF0210CBAD3FC8527BEC4 SHA-1: 0x25A63805BDCF1095D8B36E00CA4EE2EC3CBC9C2D	Worm.Win32.Ngrbot.bzm [Kaspersky Lab] Mal/Inject-CEE [Sophos] Trojan:Win32/Injector.AB [Microsoft] Trojan.Win32.Injector [Ikarus]

• Note:
• %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).

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

Memory Modifications

• There were new processes created in the system:

Process Name	Process Filename	Main Module Size
server.exe	%System%\Bifrost\server.exe	36,864 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	114,688 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
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes
IEXPLORE.EXE	102,400 bytes

• There was a new memory page created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
server.exe	%System%\bifrost\server.exe	2,060,288 bytes

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{772CDE39-9691-D57F-EDB5-0FE9C94E0E5A}
• 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\{772CDE39-9691-D57F-EDB5-0FE9C94E0E5A}]
• stubpath = "%System%\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

• To mark the presence in the system, the following Mutex objects were created:
• Bif1234
• qqq

• The following Host Names were requested from a host database:
• king-555.no-ip.info
• 192.5.5.241

• 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

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

Outbound traffic (potentially malicious)

• There was an outbound traffic produced on port 81: