ThreatExpert Report

Submission Summary:

Submission details:

Submission received: 4 December 2009, 09:51:46
Processing time: 6 min 23 sec
Submitted sample:

File MD5: 0xBFB8F7F7CA724596836428308B0D6D70
File SHA-1: 0xF93883D4FF9AAD73CEA250068D297E03C745203C
Filesize: 947,712 bytes
Packer info: packed with: UPX [Kaspersky Lab]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Registers a 32-bit in-process server DLL.
Contains characteristics of an identified security risk.

Technical Details:

The new window was created, as shown below:

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Possible Security Risk

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

Security Risk	Description
Adware.Agent	Adware.Agent will display advertisements on an infected system.

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	c:\2	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
2	%ProgramFiles%\potgo\upotgo.exe	232,960 bytes	MD5: 0x640ACF7503948578D2E1AA7744512E89 SHA-1: 0x09FDDC6DE6081B6FFC9CDD26C163B8B2D98C61FE	packed with UPX [Kaspersky Lab]
3	[file and pathname of the sample #1]	947,712 bytes	MD5: 0xBFB8F7F7CA724596836428308B0D6D70 SHA-1: 0xF93883D4FF9AAD73CEA250068D297E03C745203C	packed with UPX [Kaspersky Lab]

Note:

%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

The following directory was created:

%ProgramFiles%\potgo

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]	1,564,672 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{F2CF5485-4E02-4f68-819C-B92DE9277049}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{F2CF5485-4E02-4f68-819C-B92DE9277049}\InProcServer32
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Explorer Bars\{A1417501-FF83-4490-9346-843BEFCDA926}
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\InfoDelivery
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\InfoDelivery\Restrictions
HKEY_CURRENT_USER\Software\potgo

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0E5CBF21-D15F-11d0-8301-00AA005B4383}\InProcServer32]

(Default) = "C:\\WINDOWS\\system32\\browseui.dll"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{F2CF5485-4E02-4f68-819C-B92DE9277049}\InProcServer32]

(Default) = "C:\\WINDOWS\\system32\\ieframe.dll"
ThreadingModel = "Apartment"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{F2CF5485-4E02-4f68-819C-B92DE9277049}]

(Default) = "&Links"
MenuTextPUI = "@ieframe.dll,-13138"

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Explorer Bars\{A1417501-FF83-4490-9346-843BEFCDA926}]

BarSize = EB 00 00 00 00 00 00 00

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]

Enable Browser Extensions = "yes"

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

delfile = "cmd /c del "%ProgramFiles%\potgo\potgo.dll""
deldir = "cmd /c rmdir "%ProgramFiles%\potgo\""

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\InfoDelivery\Restrictions]

NoSearchBox = 0x00000000

[HKEY_CURRENT_USER\Software\potgo]

OverUSE = "NO"
Uns_Code = 0x4B18DC28

The following Registry Value was deleted:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0E5CBF21-D15F-11d0-8301-00AA005B4383}\InProcServer32]

(Default) = "%System%\SHELL32.dll"

The following Registry Values were modified:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0E5CBF21-D15F-11d0-8301-00AA005B4383}]

(Default) =

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser]

ITBarLayout =

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
203.251.80.86	80

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

http://www.pointgo.co.kr/toolbarinfo/uninstall.php?toolbar_id=&partner=

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