Submission Summary:

• Submission details:
• Submission received: 30 July 2009, 08:37:08
• Processing time: 6 min 11 sec
• Submitted sample:
• File MD5: 0xBD7C8E3151AF1236035C1D7C22B78347
• File SHA-1: 0x02FD495B02CD0F5A53B33E3A2944E1239882C2DA
• Filesize: 69,632 bytes
• Alias:
• PWS:Win32/Yaludle.A [Microsoft]
• PWS.Win32 [Ikarus]

• Summary of the findings:

What's been found	Severity Level
Registers a 32-bit in-process server DLL.
Registers a Browser Helper Object (Microsoft's Internet Explorer plugin module).
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

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

• Attention! The following threat category was identified:

Threat Category	Description
	A keylogger program that can capture all user keystrokes (including confidential details such username, password, credit card number, etc.)

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\mscorewr.dll	86,016 bytes	MD5: 0xC1A172928BE8042BC13DDC267F609C9B SHA-1: 0xE4AD35977812F17278513653C75049CA0B8060A3	Trojan-Spy.Win32.Ayludle.g [Kaspersky Lab] Trojan:Win32/Silentbanker.B [Microsoft] Trojan.Win32.Silentbanker [Ikarus]
2	[file and pathname of the sample #1]	69,632 bytes	MD5: 0xBD7C8E3151AF1236035C1D7C22B78347 SHA-1: 0x02FD495B02CD0F5A53B33E3A2944E1239882C2DA	PWS:Win32/Yaludle.A [Microsoft] PWS.Win32 [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).

Memory Modifications

• There was a new process created in the system:

Process Name	Process Filename	Main Module Size
IEXPLORE.EXE	%ProgramFiles%\Internet Explorer\IEXPLORE.EXE	102,400 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\Classes\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}
• HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32
• HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\TypeLib
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\TypeLib]
• (Default) = ""
• [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32]
• (Default) = "%System%\mscorewr.dll"
• ThreadingModel = "Apartment"
• [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}]
• (Default) = "mscorewr"

Other details

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

	Albania
	Russian Federation

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