ThreatExpert Report: Trojan.Generic, Trojan Horse, Trojan-Downloader.Win32.Agent.ekmq

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Submission Summary:

Submission details:

Submission received: 29 August 2010, 13:26:06
Processing time: 13 min 56 sec
Submitted sample:

File MD5: 0x3574CBA56C3720FFF6A3353E22D32C9A
File SHA-1: 0x68E0369DF759B675A092DF565B29A01B46BCC39F
Filesize: 2,424,832 bytes
Alias:

Trojan.Generic [PCTools]
Trojan Horse [Symantec]
Trojan-Downloader.Win32.Agent.ekmq [Kaspersky Lab]

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 categories were identified:

Threat Category	Description
	A program that downloads files to the local computer that may represent security risk
	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 file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%CommonAppData%\Object_inside22\Object_Inside.exe [file and pathname of the sample #1]	2,424,832 bytes	MD5: 0x3574CBA56C3720FFF6A3353E22D32C9A SHA-1: 0x68E0369DF759B675A092DF565B29A01B46BCC39F	Trojan.Generic [PCTools] Trojan Horse [Symantec] Trojan-Downloader.Win32.Agent.ekmq [Kaspersky Lab]

Note:

%CommonAppData% is a variable that refers to the file system directory containing application data for all users. A typical path is C:\Documents and Settings\All Users\Application Data.

The following directory was created:

%CommonAppData%\Object_inside22

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
IEXPLORE.EXE	%ProgramFiles%\Internet Explorer\IEXPLORE.EXE	102,400 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	43,229,184 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 Key was created:

HKEY_CURRENT_USER\Software\Object_inside22

The newly created Registry Values are:

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

Object_Inside.exe Nacional = "%CommonAppData%\Object_inside22\Object_Inside.exe"

so that Object_Inside.exe runs every time Windows starts

[HKEY_CURRENT_USER\Software\Object_inside22]

Ativ/Desa = 0x00000000

Other details

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

	Brazil
	Spain

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

oBJECT
_SHuassist.mtx

The following Host Names were requested from a host database:

www.ipsanandres.org.ar
www.carpinchonet.com.ar
www.aspro-webdesign.de
www.wartaki.pl
www.casual.in.ua
www.diervilla.pl

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

Remote Host	Port Number
72.29.71.7	80

The following HTTP URLs were started reading:

http://72.29.71.7/~pelsinta/fff/mobile5.exe.bak
http://www.carpinchonet.com.ar/estilos/mobile5.exe.bak
http://www.ipsanandres.org.ar/new_img/mobile5.exe.bak
http://www.aspro-webdesign.de/media/mobile5.exe.bak
http://www.aspro-webdesign.de/media/
http://www.carpinchonet.com.ar/estilos/
http://www.ipsanandres.org.ar/new_img/

Downloaded File Summary:

Download details:

Download retrieved: 29 August 2010 13:40:03
Processing time: 14 min 17 sec
Downloaded sample:

File MD5: 0x00166B8E72E0D962B0CBE64280575954
File SHA-1: 0xC4078AB221C7511EC2C570CCE912443455AC24EA
Filesize: 2,418,176 bytes
Packer info: packed with: UPX [Kaspersky Lab]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.

Technical Details:

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%CommonAppData%\BrEaK\Break.exe [file and pathname of the sample #1]	2,418,176 bytes	MD5: 0x00166B8E72E0D962B0CBE64280575954 SHA-1: 0xC4078AB221C7511EC2C570CCE912443455AC24EA	packed with UPX [Kaspersky Lab]

Note:

%CommonAppData% is a variable that refers to the file system directory containing application data for all users. A typical path is C:\Documents and Settings\All Users\Application Data.

The following directory was created:

%CommonAppData%\BrEaK

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
IEXPLORE.EXE	%ProgramFiles%\Internet Explorer\IEXPLORE.EXE	102,400 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	44,408,832 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 Key was created:

HKEY_CURRENT_USER\Software\BrEaK

The newly created Registry Values are:

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

Break.exe Espanha = "%CommonAppData%\BrEaK\Break.exe"

so that Break.exe runs every time Windows starts

[HKEY_CURRENT_USER\Software\BrEaK]

Ativ/Desa = 0x00000000

Other details

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

Brazil

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

BrEaK
_SHuassist.mtx

The following Host Names were requested from a host database:

www.daimlermc.ro
www.ipsanandres.org.ar
www.corsense.org
www.aspro-webdesign.de
www.wartaki.pl
www.casual.in.ua
www.diervilla.pl

The following HTTP URLs were started reading:

http://www.daimlermc.ro/fajlok/mobile6.exe.bak
http://www.corsense.org/img/mobile6.exe.bak
http://www.aspro-webdesign.de/media/mobile6.exe.bak
http://www.ipsanandres.org.ar/new_img/mobile6.exe.bak
http://www.corsense.org/img/
http://www.ipsanandres.org.ar/new_img/

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