ThreatExpert Report: Trojan-Dropper.Win32.Dorifel.bdk, Trojan-Dropper.Win32.Dorifel

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Submission Summary:

Submission details:

Submission received: 31 July 2012, 20:25:51
Processing time: 8 min 42 sec
Submitted sample:

File MD5: 0x89D503A501CE36B011B8429DAFF2D064
File SHA-1: 0xCAF46CE843FD8EE2660266EC08C97C731C728FEC
Filesize: 16,896 bytes
Alias:

Trojan-Dropper.Win32.Dorifel.bdk [Kaspersky Lab]
Trojan-Dropper.Win32.Dorifel [Ikarus]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	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	%System%\FFbackend.exe %System%\ffViewer.exe	125 bytes	MD5: 0x7C5F5A68051F6B0C0E9A2AD33C40D415 SHA-1: 0x120865765927A61AF83F02B83DC297EEDE61EC41	(not available)
2	[file and pathname of the sample #1]	16,896 bytes	MD5: 0x89D503A501CE36B011B8429DAFF2D064 SHA-1: 0xCAF46CE843FD8EE2660266EC08C97C731C728FEC	Trojan-Dropper.Win32.Dorifel.bdk [Kaspersky Lab] Trojan-Dropper.Win32.Dorifel [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).

Other details

The following Host Names were requested from a host database:

wpad.mrc.pctools.com.
dev-il.com

The following GET request was made:

wpad.dat

The following HTTP URLs were started reading:

http://dev-il.com/xbox/ffViewer.exe
http://dev-il.com/xbox/ffBackend.exe

Downloaded File Summary:

Download details:

Download retrieved: 31 July 2012 20:34:33
Processing time: 10 min 45 sec
Downloaded sample #1:

File MD5: 0x2CAB8C0AFB7D98F059E435A64BC19EC7
File SHA-1: 0xC5C5782C224E5EE0C55283A84714B07B42B05D92
Filesize: 409,600 bytes

Downloaded sample #2:

File MD5: 0x25CE03C9CA673D4E8F0CD7EE7B8BF4AB
File SHA-1: 0xF927124FAD2D9B2BBEEE176C634EDA5319AD153A
Filesize: 21,504 bytes

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash
1	%System%\FFbackend.exe %System%\prefs\prefs.ini	125 bytes	MD5: 0x7C5F5A68051F6B0C0E9A2AD33C40D415 SHA-1: 0x120865765927A61AF83F02B83DC297EEDE61EC41
2	[file and pathname of the sample #1]	409,600 bytes	MD5: 0x2CAB8C0AFB7D98F059E435A64BC19EC7 SHA-1: 0xC5C5782C224E5EE0C55283A84714B07B42B05D92
3	[file and pathname of the sample #2]	21,504 bytes	MD5: 0x25CE03C9CA673D4E8F0CD7EE7B8BF4AB SHA-1: 0xF927124FAD2D9B2BBEEE176C634EDA5319AD153A

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 directories were created:

%System%\prefs
%System%\snippets

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	N/A

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\[filename of the sample #1 without extension]
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\[filename of the sample #1 without extension]\DEBUG

The newly created Registry Value is:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\[filename of the sample #1 without extension]\DEBUG]

Trace Level = ""

Other details

The following Host Names were requested from a host database:

wpad.mrc.pctools.com.
dev-il.com

The following GET request was made:

wpad.dat

The following HTTP URLs were started reading:

http://dev-il.com/xbox/prefs.ini
http://dev-il.com/xbox/ffBackend.exe

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