Submission Summary:

• Submission details:
• Submission received: 29 August 2012, 16:18:39
• Processing time: 7 min 58 sec
• Submitted sample:
• File MD5: 0xAE9B63BDD9973E639663250663550140
• File SHA-1: 0xAF0F02CC5DF4BE233576DD384BC1788FF87FD890
• Filesize: 150,909 bytes
• Alias:
• Trojan-Spy.Win32.KeyLogger.dwl [Kaspersky Lab]
• Trojan.SuspectCRC [Ikarus]

• Summary of the findings:

What's been found	Severity Level
Produces outbound traffic.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

• Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Backdoor.Bifrose	Backdoor.Bifrose is a backdoor trojan that attempts to propagate by exploiting local network shares. It will also attempt to join a predefined IRC server and channel in order to participate in DDoS attacks.

• 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 hacktool that could be used by attackers to break into a system

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\IXP000.TMP\LFSX10~1.EXE	11,776 bytes	MD5: 0x25811B24E122ABCB8B3A247A54A9DF2E SHA-1: 0x2F6B802909731C1A4FA1C4CF9C97D6F4F9D0B856	Generic.dx!b2vs [McAfee] Mal/Generic-L [Sophos] Trojan.SuspectCRC [Ikarus] Win-Trojan/Agent.11776.ER [AhnLab] packed with UPX [Kaspersky Lab]
2	%Temp%\IXP000.TMP\server1.exe %ProgramFiles%\Bifrost\server.exe	78,039 bytes	MD5: 0xD15F93615D7268F52D653225D07420D7 SHA-1: 0x3CB4CE0F3DF28C0A1D7259F2D97184138FC44AF3	Hacktool [Symantec] Trojan-Spy.Win32.KeyLogger.dwl [Kaspersky Lab] Mal/Dorf-A [Sophos] Backdoor:Win32/Bifrose.EY [Microsoft] Trojan-Dropper.Delf [Ikarus] packed with PE_Patch.RLPack [Kaspersky Lab]
3	[file and pathname of the sample #1]	150,909 bytes	MD5: 0xAE9B63BDD9973E639663250663550140 SHA-1: 0xAF0F02CC5DF4BE233576DD384BC1788FF87FD890	Trojan-Spy.Win32.KeyLogger.dwl [Kaspersky Lab] Trojan.SuspectCRC [Ikarus]

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

• The following directories were created:
• %AppData%\Bifrost
• %Temp%\IXP000.TMP
• %ProgramFiles%\Bifrost

• 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.

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]	163,840 bytes
server.exe	%ProgramFiles%\bifrost\server.exe	45,056 bytes
server1.exe	%Temp%\IXP000.TMP\server1.exe	54,141 bytes

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{5401F390-DE20-2830-6E19-2368533992D7}
• 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\{5401F390-DE20-2830-6E19-2368533992D7}]
• stubpath = "%AppData%\Bifrost\server.exe s"

so that server.exe runs every time Windows starts

• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
• wextract_cleanup0 = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 "%Temp%\IXP000.TMP\""
• [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 = 00

Other details

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

	Germany
	Saudi Arabia

• To mark the presence in the system, the following Mutex objects were created:
• Bif123
• RLPack
• LFS v.X10

• The following Host Names were requested from a host database:
• 192.5.5.241
• snkozhkr.zapto.org

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

Outbound traffic (potentially malicious)

• There was an outbound traffic produced on port 81: