ThreatExpert Report: Downloader, Trojan-Downloader.Win32.Agent.byla, Mal/EncPk-HJ, Generic..

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Submission Summary:

Submission details:

Submission received: 20 May 2009, 15:05:17
Processing time: 9 min 35 sec
Submitted sample:

File MD5: 0xB6B81CB1161EAE152EF3EC62215F09FE
File SHA-1: 0xC28E41C2FAF8C6027EE812D302B6FBDA7D80F877
Filesize: 51,712 bytes
Alias:

Downloader [Symantec]
Trojan-Downloader.Win32.Agent.byla [Kaspersky Lab]
Mal/EncPk-HJ [Sophos]

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 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	[file and pathname of the sample #1]	51,712 bytes	MD5: 0xB6B81CB1161EAE152EF3EC62215F09FE SHA-1: 0xC28E41C2FAF8C6027EE812D302B6FBDA7D80F877	Downloader [Symantec] Trojan-Downloader.Win32.Agent.byla [Kaspersky Lab] Mal/EncPk-HJ [Sophos]

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]	61,440 bytes

Other details

The following HTTP URLs were started reading:

http://imageempires.com/perce/d0307c1d81aa14d04d8431ed888c0d7958afc0408b62e0747ed9f860002959e86edcfff87412c7ce9/f0a/perce.jpg
http://coolimagepro.com/item/2080ac9dd15a6420ddd4114d48fc4db9f86f00d0dbe2c0c46ee988207089c9981e7c3fe8c4a217ae7/20f/item.gif
http://portalpics.com/werber/c01/216.jpg
http://kir-fileplanet.com/file.exe

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

http://fwrskljgsklj.com/fff9999.php?aid=0&uid=00cd1a40d41d8cd98f00b204e9800998ecf8427e&os=512
http://fwrskljgsklj.com/eee9999.php?aid=0&uid=00cd1a40d41d8cd98f00b204e9800998ecf8427e&os=512

Downloaded File Summary:

Download details:

Download retrieved: 20 May 2009 15:14:55
Processing time: 7 min 14 sec
Downloaded sample #1:

File MD5: 0x8BB2B27AB730D58464F6D862DFED3B24
File SHA-1: 0x2AF7DCAF41C33B7DEA15B4B5EDE0C1B928CB3934
Filesize: 125,444 bytes
Alias:

Generic Dropper.cx [McAfee]
Mal/EncPk-HW [Sophos]

Downloaded sample #2:

File MD5: 0xC78ECE82446F4A8AE11258D27D7B54C3
File SHA-1: 0xBAD29ABE5B4268291DFAEE5AC5A272A167801CE3
Filesize: 150,532 bytes
Alias:

Generic Dropper.cx [McAfee]
Mal/EncPk-HW [Sophos]

Downloaded sample #3:

File MD5: 0x608E0A01F539D24CE01E25DEC8198E43
File SHA-1: 0xF5E13C714FAE1F568AE6C8E2BBFB92BCF0D09465
Filesize: 119,300 bytes
Alias:

Generic Dropper.cx [McAfee]
Mal/EncPk-HW [Sophos]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.
Registers a 32-bit in-process server DLL.
Registers a Browser Helper Object (Microsoft's Internet Explorer plugin module).
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risks were identified in the system:

Security Risk	Description
Adware.BHO.GEN	Adware.BHO.GEN is adware that use BHOs to display ads or can be used for malicious purposes like gathering info on your surfing habits. It also has the functionality to download and install further malicious files from remote servers.
Trojan.FakeAlert	Trojan.FakeAlert will hijack the desktop background with an image alerting the user that their computer system has been infected with spyware. It also changes some settings of windows which include:- disabling permissions for the user to change the background image and setting the active desktop to 'show web content'. It is usually installed in conjunction with a rogue anti-spyware application.
Backdoor.Agent	Backdoor.Agent attempts to create backdoors and allows an attacker unauthorized access to the infected machine.
Trojan-Downloader.Renos	Trojan-Downloader.Renos attempts to download certain rogue anti-spyware application.

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\msxml71.dll	134,660 bytes	MD5: 0x6EE87B1D42266FDC208E53E224A32AEC SHA-1: 0x1E9A4E8440C4B7FFDA3BB879D7AA53D07674FA38	(not available)
2	[file and pathname of the sample #1]	125,444 bytes	MD5: 0x8BB2B27AB730D58464F6D862DFED3B24 SHA-1: 0x2AF7DCAF41C33B7DEA15B4B5EDE0C1B928CB3934	Generic Dropper.cx [McAfee] Mal/EncPk-HW [Sophos]
3	[file and pathname of the sample #2]	150,532 bytes	MD5: 0xC78ECE82446F4A8AE11258D27D7B54C3 SHA-1: 0xBAD29ABE5B4268291DFAEE5AC5A272A167801CE3	Generic Dropper.cx [McAfee] Mal/EncPk-HW [Sophos]
4	[file and pathname of the sample #3]	119,300 bytes	MD5: 0x608E0A01F539D24CE01E25DEC8198E43 SHA-1: 0xF5E13C714FAE1F568AE6C8E2BBFB92BCF0D09465	Generic Dropper.cx [McAfee] Mal/EncPk-HW [Sophos]
5	%Windir%\Tasks\{5B57CF47-0BFA-43c6-ACF9-3B3653DCADBA}.job	274 bytes	MD5: 0x90B24AEE7A64D6FF5D87AFA22BE43CC2 SHA-1: 0x4B1B1843B90F57CDC0EC60C4A4C49D8E722F091D	(not available)

Notes:

%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).
%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	229,376 bytes
[filename of the sample #3]	[file and pathname of the sample #3]	217,088 bytes
[filename of the sample #2]	[file and pathname of the sample #2]	196,608 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B6AE55BF-4617-93EF-6EA4-4E52199CA591}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B6AE55BF-4617-93EF-6EA4-4E52199CA591}\?.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{500BCA15-57A7-4eaf-8143-8C619470B13D}
HKEY_CURRENT_USER\Software\Cognac
HKEY_CURRENT_USER\Software\ColdWare
HKEY_CURRENT_USER\Software\XML

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\VersionIndependentProgID]

(Default) = "XML.XML"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\TypeLib]

(Default) = "{B6AE55BF-4617-93EF-6EA4-4E52199CA591}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ProgID]

(Default) = "XML.XML.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\InprocServer32]

(Default) = "%System%\msxml71.dll"
ThreadingModel = "Apartment"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}]

(Default) = "XML Class"
Install = "OK"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B6AE55BF-4617-93EF-6EA4-4E52199CA591}\?.0]

(Default) = "%System%\msxml71.dll"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CurVer]

(Default) = "XML.XML.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CLSID]

(Default) = "{500BCA15-57A7-4eaf-8143-8C619470B13D}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML]

(Default) = "XML Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1\CLSID]

(Default) = "{500BCA15-57A7-4eaf-8143-8C619470B13D}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1]

(Default) = "XML Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{500BCA15-57A7-4eaf-8143-8C619470B13D}]

(Default) = "XML module"

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

Cognac = "[file and pathname of the sample #1]"

so that [file and pathname of the sample #1] runs every time Windows starts

[HKEY_CURRENT_USER\Software\Cognac]

s00000002 = "xC7aKZ+O6wyPlq1krRM4sG7m2LFGsYtHjHOagBf10Uk/n4gL8s8xs9LeD5KQVh3/j+XFa0mnr175UElKKyciA2gn6tUEA721Fj4P"
d00000002 = 0x01C9DA6A
d00000003 = 0x0BBB69B0
d00000006 = 0x00000006
d00000006 = 0x00000004

[HKEY_CURRENT_USER\Software\ColdWare]

s00000001 = ""
d00000006 = 0x00000000
d00000000 = 0x01C9DA69
d00000001 = 0xFEE3C110

Other details

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

NfeAhn02Gc9NqPBvmEc8
Global\{CFBF19B8-27D0-45ea-865F-8BF8F9C77F25}
yDDVZp8djPzA7SQGlLdL
lpJBlsrAWZI61dr6dQFt
Global\{4A0A574F-EC90-4a3f-8C4E-BA240F5991E9}

The following ports were open in the system:

Port	Protocol	Process
1092	TCP	[file and pathname of the sample #1]
1093	TCP	[file and pathname of the sample #1]
1094	TCP	[file and pathname of the sample #1]
1095	TCP	[file and pathname of the sample #1]
1096	TCP	[file and pathname of the sample #1]
1097	TCP	[file and pathname of the sample #1]
1098	TCP	[file and pathname of the sample #1]
1099	TCP	[file and pathname of the sample #1]

The following Host Names were requested from a host database:

protect-management.com
protection-manager.com
searchricerca.com

The following Internet Connections were established:

Server Name	Server Port	Connect as User	Connection Password
zone-searching.com	80	(null)	(null)
images-base.com	80	(null)	(null)
164.122.8.10	80	(null)	(null)
imagesrepository.com	80	(null)	(null)
73.71.74.124	80	(null)	(null)
searchzoeken.com	80	(null)	(null)
212.233.25.46	80	(null)	(null)

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