Submission Summary:

• Submission details:
• Submission received: 24 June 2009, 23:27:25
• Processing time: 7 min 46 sec
• Submitted sample:
• File MD5: 0xB68E23E9C835EB1B4A0105E84CE14011
• File SHA-1: 0x949020A87B0D768152F11F3CA57C4B4DC3AC05E0
• Filesize: 81,920 bytes

• 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.
Creates a startup registry entry.
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
1	%System%\lowsec\local.ds %System%\lowsec\user.ds	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709
2	%System%\lowsec\user.ds.lll	276 bytes	MD5: 0xD0C6A84FE3874C0D5FCC8989C69A60EF SHA-1: 0x8163913749030FBA6512EBC21689280B1B82662A
3	[file and pathname of the sample #1]	81,920 bytes	MD5: 0xB68E23E9C835EB1B4A0105E84CE14011 SHA-1: 0x949020A87B0D768152F11F3CA57C4B4DC3AC05E0
4	%System%\sdra64.exe	499,200 bytes	MD5: 0x195BFE24113959C870EDB0F8AED84BF9 SHA-1: 0x1327E0392214F63EF569213D3AFD9894B71F4AD5

• 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).

• The following directory was created:
• %System%\lowsec

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%_0005C701"
• [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 = "%System%\userinit.exe,%System%\sdra64.exe,"

so that sdra64.exe runs every time Windows starts

• [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
• Cookies = "%Profiles%\LocalService\Cookies"
• History = "%Profiles%\LocalService\Local Settings\History"