ThreatExpert Report: Downloader, Trojan-Downloader.Win32.Poni.ba, Trojan-Downloader.Win32.Cornfemo

Visit ThreatExpert web site

Close Report

Submission Summary:

Submission details:

Submission received: 4 November 2009, 03:53:43
Processing time: 6 min 32 sec
Submitted sample:

File MD5: 0xA38644655C185060157E98CA83E39BAD
File SHA-1: 0xBF08EDEEAA1A7D78B4F0F353AE076A0F6CAB9FEC
Filesize: 61,440 bytes
Alias:

Downloader [Symantec]
Trojan-Downloader.Win32.Poni.ba [Kaspersky Lab]
Trojan-Downloader.Win32.Cornfemo [Ikarus]

Summary of the findings:

What's been found	Severity Level
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 category was identified:

Threat Category	Description
	A program that downloads files to the local computer that may represent security risk

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\nmxpvywb.exe [file and pathname of the sample #1]	61,440 bytes	MD5: 0xA38644655C185060157E98CA83E39BAD SHA-1: 0xBF08EDEEAA1A7D78B4F0F353AE076A0F6CAB9FEC	Downloader [Symantec] Trojan-Downloader.Win32.Poni.ba [Kaspersky Lab] Trojan-Downloader.Win32.Cornfemo [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
nmxpvywb.exe	%System%\nmxpvywb.exe	61,440 bytes

Registry Modifications

The following Registry Key was created:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw\Types

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw\Types]

ver = "0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]

Taskman = "nmxpvywb.exe"

so that nmxpvywb.exe runs every time Windows starts

Other details

Analysis of the file resources indicate the following possible country of origin:

Republic of Korea

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

Remote Host	Port Number
58.225.75.168	80

The data identified by the following URLs was then requested from the remote web server:

http://newdonkey.net/inetcreative/default/imkrinest8.ini
http://newdonkey.net/inetcreative/zone/rsobie8.exe
http://newdonkey.net/inetcreative/pool/slosa8nn.exe

All content ("Information") contained in this report is the copyrighted work of Threat Expert Ltd and its associated companies ("ThreatExpert") and may not be copied without the express permission of ThreatExpert.

The Information is provided on an "as is" basis. ThreatExpert disclaims all warranties, whether express or implied, to the maximum extent permitted by law, including the implied warranties that the Information is merchantable, of satisfactory quality, accurate, fit for a particular purpose or need, or non-infringing, unless such implied warranties are legally incapable of exclusion. Further, ThreatExpert does not warrant or make any representations regarding the use or the results of the use of the Information in terms of their correctness, accuracy, reliability, or otherwise.