ThreatExpert Report: Downloader-CJX.gen.o, Mal/SillyFDC-I, Worm:Win32/Vobfus.gen!D, Virus.Win32.VB

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Submission Summary:

Submission details:

Submission received: 25 October 2012, 02:16:28
Processing time: 15 min 17 sec
Submitted sample:

File MD5: 0x7D8CA8F69D57AA50581EF50089ECFBEA
File SHA-1: 0x862AC633A9210102C3521FAFBA722407B6A90A38
Filesize: 299,008 bytes
Alias:

Downloader-CJX.gen.o [McAfee]
Mal/SillyFDC-I [Sophos]
Worm:Win32/Vobfus.gen!D [Microsoft]
Virus.Win32.VB [Ikarus]

Summary of the findings:

What's been found	Severity Level
Creates a startup registry entry.

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%UserProfile%\xoiub.exe	299,008 bytes	MD5: 0x39FCC1B08731CB1D936406D33D9F3202 SHA-1: 0xCDBF0ADF90323EA13A6CF55D5E3637E608193550	Downloader-CJX.gen.o [McAfee] Mal/SillyFDC-I [Sophos] Worm:Win32/Vobfus.gen!D [Microsoft] Virus.Win32.VB [Ikarus]
2	[file and pathname of the sample #1]	299,008 bytes	MD5: 0x7D8CA8F69D57AA50581EF50089ECFBEA SHA-1: 0x862AC633A9210102C3521FAFBA722407B6A90A38	Downloader-CJX.gen.o [McAfee] Mal/SillyFDC-I [Sophos] Worm:Win32/Vobfus.gen!D [Microsoft] Virus.Win32.VB [Ikarus]

Note:

%UserProfile% is a variable that specifies the current user's profile folder. By default, this is C:\Documents and Settings\[UserName] (Windows NT/2000/XP).

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]	245,760 bytes

Registry Modifications

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

xoiub = "%UserProfile%\xoiub.exe /w"

so that xoiub.exe runs every time Windows starts

Other details

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

The following Host Name was requested from a host database:

ns1.player1253.com

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

Remote Host	Port Number
ns1.player1253.com	8000

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