Submission Summary:

• Submission details:
• Submission received: 8 September 2012, 17:05:57
• Processing time: 9 min 25 sec
• Submitted sample:
• File MD5: 0xE44D5B6FC5D57AF61BA106D3AA1AF428
• File SHA-1: 0x4CE31A481C073B8A19B12D143AF080F9B52D481F
• Filesize: 67,997 bytes
• Alias:
• Backdoor.Bifrose [Symantec]
• Trojan.Win32.Patched.ka [Kaspersky Lab]
• Generic Dropper.pm.gen [McAfee]
• BKDR_BIFROSE.SMA [Trend Micro]
• Mal/Dorf-D [Sophos]
• Backdoor:Win32/Bifrose.AE [Microsoft]
• Trojan.Win32.Midgare [Ikarus]
• Win-Trojan/Bifrose.Gen [AhnLab]

• Summary of the findings:

What's been found	Severity Level
Produces outbound traffic.
Downloads/requests other files from Internet.
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 keylogger program that can capture all user keystrokes (including confidential details such username, password, credit card number, etc.)
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system
	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	%AppData%\Microsoft\Windows\uZCitk9XZ.dat	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
2	%Temp%\4.tmp %System%\InstallDir\Win32.exe	33,792 bytes	MD5: 0x97D1427AB0C01D169A3BC29004F72EDC SHA-1: 0x22E02895B04486C69A57CC0B733231246AEDE7AD	Backdoor.Trojan [Symantec] Trojan-Spy.Win32.KeyLogger.qzp [Kaspersky Lab] Mal/SillyFDC-A [Sophos] Trojan-Spy.Win32.KeyLogger [Ikarus] packed with UPX [Kaspersky Lab]
3	%ProgramFiles%\Bifrost\server.exe [file and pathname of the sample #1]	67,997 bytes	MD5: 0xE44D5B6FC5D57AF61BA106D3AA1AF428 SHA-1: 0x4CE31A481C073B8A19B12D143AF080F9B52D481F	Backdoor.Bifrose [Symantec] Trojan.Win32.Patched.ka [Kaspersky Lab] Generic Dropper.pm.gen [McAfee] BKDR_BIFROSE.SMA [Trend Micro] Mal/Dorf-D [Sophos] Backdoor:Win32/Bifrose.AE [Microsoft] Trojan.Win32.Midgare [Ikarus] Win-Trojan/Bifrose.Gen [AhnLab]

• 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.
• %Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).
• %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).
• %ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

• The following directories were created:
• %ProgramFiles%\Bifrost
• %System%\InstallDir

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]	76,640 bytes
1.tmp	%Temp%\1.tmp	315,392 bytes
server.exe	%ProgramFiles%\bifrost\server.exe	76,640 bytes
win32.exe	%System%\installdir\win32.exe	315,392 bytes
4.tmp	%Temp%\4.tmp	315,392 bytes

• There were new memory pages created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
svchost.exe	%System%\svchost.exe	315,392 bytes
IEXPLORE.EXE	%ProgramFiles%\internet explorer\iexplore.exe	315,392 bytes

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{15EF850P-YCVP-6U64-5187-38678R1UKCMO}
• 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
• HKEY_CURRENT_USER\Software\uZCitk9XZ
• HKEY_CURRENT_USER\Software\XtremeRAT

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{15EF850P-YCVP-6U64-5187-38678R1UKCMO}]
• StubPath = "%System%\InstallDir\Win32.exe"

so that Win32.exe runs every time Windows starts

• [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\Microsoft\Windows\CurrentVersion\Run]
• HKLM = "%System%\InstallDir\Win32.exe"

so that Win32.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\Microsoft\Windows\CurrentVersion\Run]
• HKCU = "%System%\InstallDir\Win32.exe"

so that Win32.exe runs every time Windows starts

• [HKEY_CURRENT_USER\Software\Bifrost]
• klg = 00
• [HKEY_CURRENT_USER\Software\uZCitk9XZ]
• ServerStarted = "08/09/2012 17:06:03"
• [HKEY_CURRENT_USER\Software\XtremeRAT]
• Mutex = "uZCitk9XZ"

Other details

• To mark the presence in the system, the following Mutex objects were created:
• Bif1234
• uZCitk9XZ
• uZCitk9XZPERSIST
• DDrawWindowListMutex
• DDrawDriverObjectListMutex
• __DDrawExclMode__
• __DDrawCheckExclMode__

• The following Host Name was requested from a host database:
• cr0nic.no-ip.org

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

• The data identified by the following URL was then requested from the remote web server:
• http://akramspain.no-ip.biz:83/1234567890.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

Outbound traffic (potentially malicious)

• There was an outbound traffic produced on port 81: