ThreatExpert Report: Trojan-Dropper.Win32.Agent.biqt, Trojan:Win32/Xilcter.A.dll..

Submission Summary:

Submission details:

Submission received: 28 November 2009, 13:49:00
Processing time: 8 min 43 sec
Submitted sample:

File MD5: 0xC21A1C48552D4493103DAE4E95E80660
File SHA-1: 0xB7A178E60657132F51AA1CC96E5CFEC3772F8456
Filesize: 42,496 bytes
Alias: Trojan-Dropper.Win32.Agent.biqt [Kaspersky Lab]

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 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

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Templates%\curslib.dll	31,744 bytes	MD5: 0x3384914565738CFB414860E10F8AA66F SHA-1: 0x721361EE885F125F69A0C9924FC34AAC872DABD0	Trojan:Win32/Xilcter.A.dll [Microsoft]
2	%Templates%\data.tmp	42,496 bytes	MD5: 0xC21A1C48552D4493103DAE4E95E80660 SHA-1: 0xB7A178E60657132F51AA1CC96E5CFEC3772F8456	Trojan-Dropper.Win32.Agent.biqt [Kaspersky Lab]
3	%Templates%\wincert.dll	37,376 bytes	MD5: 0x5452CCCD1759D2288A6F9B70EF4CF2CF SHA-1: 0x0AF679F7663EAE81496C68336CCD56324D9F2ACD	Backdoor.Win32.Small.irg [Kaspersky Lab]
4	%System%\curslib.dll	31,744 bytes	MD5: 0x1D8B4396ED049047B40513BA173C540D SHA-1: 0x79BC32B3F1CED9E7ED4FF17B23165325605EECD0	Trojan:Win32/Xilcter.A.dll [Microsoft]
5	%System%\flags.ini	100 bytes	MD5: 0x6D0BB00954CEB7FBEE436BB55A8397A9 SHA-1: 0xED4A77D1B56A118938788FC53037759B6C501E3D	(not available)
6	%System%\uses32.dat	301 bytes	MD5: 0x295BBDB1379450C82DA1914CDBA9D59C SHA-1: 0x6E5FF843B73249179404C0228AA7963C2D89C13F	(not available)
7	%System%\wincert.dll	37,376 bytes	MD5: 0x91887EBBD9A2BD1B48A9E5E199806060 SHA-1: 0x6B1B36871E43C30364E621A6C7B77C753C0A931B	(not available)

Notes:

%Templates% is a variable that refers to the file system directory that serves as a common repository for document templates. A typical path is C:\Documents and Settings\[UserName]\Templates.
%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

The following modules were loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
curslib.dll	%System%\curslib.dll	Process name: IEXPLORE.EXE Process filename: %ProgramFiles%\internet explorer\iexplore.exe Address space: 0x10000000 - 0x1000B000
curslib.dll	%System%\curslib.dll	Process name: VMwareUser.exe Process filename: %ProgramFiles%\vmware\vmware tools\vmwareuser.exe Address space: 0x10000000 - 0x1000B000

Notes:

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

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\AppCertDlls
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\AppCertDlls
HKEY_CURRENT_USER\Software\UpdateGMT

The newly created Registry Values are:

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

LoadAppInit_DLLs = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\AppCertDlls]

AppSecDll = "%System%\wincert.dll"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\AppCertDlls]

AppSecDll = "%System%\wincert.dll"

[HKEY_CURRENT_USER\Software\UpdateGMT]

RunTime = 0x00081EDD
Run = 0x00000000
TimeGetWork = 0x00081EDD

The following Registry Value was modified:

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

AppInit_DLLs =

Other details

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

Remote Host	Port Number
94.75.229.250	80

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

http://mynewworldorder.cn/message.php?subid=16&version=_v24
http://software2update.co.cc/file16_v25.tmp

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