ThreatExpert Report: Backdoor.Win32.UltimateDefender.glt, Trojan.Virantix.C, Mal/EncPk-EQ..

Visit ThreatExpert web site

Close Report

Submission Summary:

Submission details:

Submission received: 11 November 2008, 07:58:59
Processing time: 7 min 14 sec
Submitted sample:

File MD5: 0xE4F35BF5A6708E62922656CF7E3533D9
File SHA-1: 0x0D1B4E9D73B8F8243A618E7DA662DE094330C2F8
Filesize: 40,960 bytes
Alias:

Trojan.Virantix.C [Symantec]
Backdoor.Win32.UltimateDefender.glt [Kaspersky Lab]
Mal/EncPk-EQ [Sophos]
Trojan:Win32/Wantvi.I [Microsoft]
Trojan.Win32.FakePowav [Ikarus]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Modifies some system settings that may have negative impact on overall system security state.
Creates a startup registry entry.
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.Agent.ZO	Adware.Agent.ZO lowers some IE security settings and downloads RogueAntiSpyware without user's permission.
Backdoor.Wind0s	-- This is a Trojan Backdoor --

Attention! The following threat categories were identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system
	A hacktool that could be used by attackers to break into a system

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%UserProfile%\delself.bat	126 bytes	MD5: 0x3BB4851B8EFF8E915F0F87A668E3A42E SHA-1: 0x5283A76AB45024165ED4AF8CECCF373ED37EAF48	(not available)
2	%System%\brastk.exe	9,728 bytes	MD5: 0x9ECA78D3440AEEF9672C490DD8375DA7 SHA-1: 0x19FAC31B77ACDE90F069EE0D9460586E817185DA	Trojan.Virantix.C [Symantec] Mal/EncPk-EQ [Sophos] TrojanDownloader:Win32/Renos [Microsoft] Trojan.Win32.FakePowav [Ikarus]
3	%System%\dllcache\beep.sys %System%\dllcache\figaro.sys	27,648 bytes	MD5: 0x7DC1BFBAD7EB7D663903C0E245C96377 SHA-1: 0xACF664174802FDA41988949332BB46EE3077925B	Rootkit.Renos.Gen.11 [PCTools] Hacktool.Rootkit [Symantec] Backdoor.Win32.UltimateDefender.a [Kaspersky Lab] NTRootKit-AC [McAfee] Mal/FakeAle-C [Sophos] VirTool:WinNT/Xantvi.gen!A [Microsoft] not-a-virus:.FraudTool.Win32.UltimateDefender.cm [Ikarus]
4	[file and pathname of the sample #1]	40,960 bytes	MD5: 0xE4F35BF5A6708E62922656CF7E3533D9 SHA-1: 0x0D1B4E9D73B8F8243A618E7DA662DE094330C2F8	Trojan.Virantix.C [Symantec] Backdoor.Win32.UltimateDefender.glt [Kaspersky Lab] Mal/EncPk-EQ [Sophos] Trojan:Win32/Wantvi.I [Microsoft] Trojan.Win32.FakePowav [Ikarus]
5	%System%\wini10251.exe	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)

Notes:

%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).
%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).

The following file was modified:

%System%\drivers\beep.sys

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
brastk.exe	%System%\brastk.exe	32,768 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	53,248 bytes

Registry Modifications

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0]

1208 = 0x00000000
2500 = 0x00000003

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1]

1208 = 0x00000000
2500 = 0x00000003

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2]

1208 = 0x00000000
2500 = 0x00000003

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3]

1208 = 0x00000000
2500 = 0x00000003

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4]

1208 = 0x00000000
2500 = 0x00000003

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

brastk = "%System%\brastk.exe"

so that brastk.exe runs every time Windows starts

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

Enable Browser Extensions = "yes"
Search Bar = "http://www.google.com/ie"

[HKEY_CURRENT_USER\Software\Microsoft\Security Center]

AntiVirusDisableNotify = 0x00000001
FirewallDisableNotify = 0x00000001
UpdatesDisableNotify = 0x00000001

to disable notification of firewall, antivirus and/or update status through the Windows Security Center

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

brastk = "%System%\brastk.exe"

so that brastk.exe runs every time Windows starts

The following Registry Values were modified:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main]

Default_Search_URL = "http://www.google.com/ie"
Search Page = "http://www.google.com"
Start Page = "http://www.google.com"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search]

SearchAssistant = "http://www.google.com"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0]

1201 = 0x00000000
1804 = 0x00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1]

1201 = 0x00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2]

1201 = 0x00000000
1804 = 0x00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3]

1201 = 0x00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4]

1200 = 0x00000000
1201 = 0x00000000
1608 = 0x00000000
1804 = 0x00000001

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

Start Page = "http://www.google.com"
Search Page = "http://www.google.com"

Other details

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

{432780427656663764673647663354632}
{232780427656663764673647663354632}

The following Internet downloads were started (the retrieved bits are saved into the local file):

URL to be downloaded	Filename for the downloaded bits
http://do-power-scan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://do-step-scan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://do-monster-progress.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://domonster-progress.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://dopower-scan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://dostep-scan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://do-monsterscan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://do-powerscan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://do-stepscan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://doscan-progress.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://do-fixed-progress.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://domanaged-scan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://do-managedscan.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe
http://domake-progress.com/?wmid=1025&l=34&it=2&s=1	%System%\wini10251.exe

A system request is initiated to shut down and then restart the system.

Downloaded File Summary:

Download details:

Download retrieved: 11 November 2008 08:07:19
Processing time: 7 min 43 sec
Downloaded sample:

File MD5: 0x532D3DFE258F241533BC5AFC4ABF344D
File SHA-1: 0x7094E5674CFA732F5F3481E765A68A12E4C10655
Filesize: 142,267 bytes
Alias:

Trojan.Virantix.C [Symantec]
Trojan-Downloader.Win32.FraudLoad.vdjr [Kaspersky Lab]
FakeAlert-XPSecCenter [McAfee]
Mal/EncPk-EQ [Sophos]
TrojanDownloader:Win32/FakeRean.gen!C [Microsoft]
Trojan.Win32.FakePowav [Ikarus]

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:

The new window was created, as shown below:

NOTICE: The content shown in the above window is captured automatically and is not controlled or endorsed by ThreatExpert.
Please contact us on this link should any material be offensive or inappropriate and we will ensure any such content is blocked from future viewers of the report.

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 files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%DesktopDir%\AntivirusPro2009.lnk %Programs%\AntivirusPro2009\AntivirusPro2009.lnk	1,443 bytes	MD5: 0x04B138C5405A0D05B4C52FD26A4ACCD1 SHA-1: 0xB4EDAC4D3D3B5676DE9657D55A683D4E54D511E6	(not available)
2	%Programs%\AntivirusPro2009\Uninstall.lnk	1,593 bytes	MD5: 0xADC602CB0ECA61A7AE03EFB6A08D1669 SHA-1: 0xAC88B0ED0C1115A1D8DE853C45ACA17703132B89	(not available)
3	%ProgramFiles%\AntivirusPro2009\Uninstall.exe [file and pathname of the sample #1]	142,267 bytes	MD5: 0x532D3DFE258F241533BC5AFC4ABF344D SHA-1: 0x7094E5674CFA732F5F3481E765A68A12E4C10655	Trojan.Virantix.C [Symantec] Trojan-Downloader.Win32.FraudLoad.vdjr [Kaspersky Lab] FakeAlert-XPSecCenter [McAfee] Mal/EncPk-EQ [Sophos] TrojanDownloader:Win32/FakeRean.gen!C [Microsoft] Trojan.Win32.FakePowav [Ikarus]

Notes:

%DesktopDir% is a variable that refers to the file system directory used to physically store file objects on the desktop. A typical path is C:\Documents and Settings\[UserName]\Desktop.
%Programs% is a variable that refers to the file system directory that contains the user's program groups. A typical path is C:\Documents and Settings\[UserName]\Start Menu\Programs.
%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

The following directories were created:

%Programs%\AntivirusPro2009
%ProgramFiles%\AntivirusPro2009

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]	192,512 bytes

Registry Modifications

The following Registry Key was created:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AntivirusPro2009

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AntivirusPro2009]

DisplayName = "Antivirus Pro 2009"
UninstallString = "%ProgramFiles%\AntivirusPro2009\Uninstall.exe"

[HKEY_CURRENT_USER\Control Panel\don't load]

scui.cpl = "No"
wscui.cpl = "No"

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]

ForceClassicControlPanel = 0x00000001

Other details

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

Russian Federation

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

http://do-monster-scan.com/
http://do-fixed-progress.com/
http://domanaged-scan.com/
http://do-managedscan.com/
http://domake-progress.com/

The following Internet downloads were started (the retrieved bits are saved into the local file):

URL to be downloaded	Filename for the downloaded bits
http://download-soft-index.com/binary/AntivirusPro2009/Binaries1.cab	%Temp%\wrdwn2
http://download-soft-index.com/binary/BinariesAVE.cab	%Temp%\wrdwn3
http://download-soft-index.com/binary/BinariesAdd.cab	%Temp%\wrdwn4
http://download-soft-index.com/binary/BinariesGUI.cab	%Temp%\wrdwn5
http://download-soft-index.com/binary/BinariesSC.cab	%Temp%\wrdwn6
http://download-soft-index.com/binary/BinariesUpd.cab	%Temp%\wrdwn7

Notes:

%Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).

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.