Submission Summary:

• Submission details:
• Submission received: 11 November 2009, 14:04:13
• Processing time: 5 min 57 sec
• Submitted sample:
• File MD5: 0xBB3CCBC209999BEB3B1EB566290866FB
• File SHA-1: 0x9F2AE17D6AEDCAA7E92C368585029960D3C755D3
• Filesize: 87,040 bytes
• Alias:
• Trojan-PSW.Generic [PCTools]
• Infostealer [Symantec]
• Mal/Dropper-G [Sophos]
• VirTool:Win32/DelfInject.gen!L [Microsoft]
• BehavesLike.Win32.ExplorerHijack [Ikarus]
• Win-Trojan/ZBot.87040.B [AhnLab]

• Summary of the findings:

What's been found	Severity Level
Threat characteristics of ZBot - a banking trojan that disables firewall, steals sensitive financial data (credit card numbers, online banking login details), makes screen snapshots, downloads additional components, and provides a hacker with the remote access to the compromised system.
Stealth-mode characteristics common to Rootkits.
Downloads/requests other files from Internet.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

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

Security Risk	Description
Trojan-Spy.Zbot.YETH	Trojan-Spy.Zbot.YETH is a rootkit trojan which steals online banking information and downloads other malware as well.

• Attention! The following threat categories were identified:

Threat Category	Description
	A keylogger program that can capture all user keystrokes (including confidential details such username, password, credit card number, etc.)
	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	[file and pathname of the sample #1]	87,040 bytes	MD5: 0xBB3CCBC209999BEB3B1EB566290866FB SHA-1: 0x9F2AE17D6AEDCAA7E92C368585029960D3C755D3	Trojan-PSW.Generic [PCTools] Infostealer [Symantec] Mal/Dropper-G [Sophos] VirTool:Win32/DelfInject.gen!L [Microsoft] BehavesLike.Win32.ExplorerHijack [Ikarus] Win-Trojan/ZBot.87040.B [AhnLab]
2	%System%\sdra64.exe	371,200 bytes	MD5: 0x637F00ADD03180A199C2F7ADF9F463F3 SHA-1: 0x0A49DD6168BA2D62512561523309CA4EA2F5DB3C	Trojan-PSW.Generic [PCTools] Infostealer [Symantec] Mal/Dropper-G [Sophos] VirTool:Win32/DelfInject.gen!L [Microsoft] BehavesLike.Win32.ExplorerHijack [Ikarus]

• Note:
• %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).

• Attention! The following hidden files were created in the system:

• Attention! The following hidden directory was created:
• %System%\lowsec

Memory Modifications

• There were new memory pages created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
services.exe	%System%\services.exe	90,112 bytes
lsass.exe	%System%\lsass.exe	90,112 bytes
svchost.exe	%System%\svchost.exe	90,112 bytes
svchost.exe	%System%\svchost.exe	90,112 bytes
svchost.exe	%System%\svchost.exe	90,112 bytes
svchost.exe	%System%\svchost.exe	90,112 bytes
svchost.exe	%System%\svchost.exe	90,112 bytes
alg.exe	%System%\alg.exe	90,112 bytes

Registry Modifications

• The following Registry Keys were created:
• HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}
• HKEY_USERS\.DEFAULT\Software\Microsoft\Protected Storage System Provider

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Network]
• UID = "%ComputerName%_0001C483"
• [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}]
• {3039636B-5F3D-6C64-6675-696870667265} = F7 09 F2 0D
• {33373039-3132-3864-6B30-303233343434} = 47 09 F2 0D
• [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
• ProxyEnable = 0x00000000

• The following Registry Values were modified:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
• Userinit =
• [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
• Cookies =
• History =

Other details

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

• The data identified by the following URLs was then requested from the remote web server:
• http://mybestline.cn/drutg/ahry/tema.bin
• http://mybestline.cn/fart/game/ip.php