Submission Summary:

• Submission details:
• Submission received: 28 June 2009, 09:11:03
• Processing time: 7 min 2 sec
• Submitted sample:
• File MD5: 0xC1A3FB6FEA94982ECB1D092D0095FC07
• File SHA-1: 0x1DD74057FF2773450484CAEF183DFE4C69D5037C
• Filesize: 83,456 bytes
• Alias:
• Packed.Generic.232 [Symantec]
• Trojan-Dropper.Win32.Zbot.i [Kaspersky Lab]
• Generic PWS.y!dh [McAfee]
• Mal/Zbot-O [Sophos]
• PWS:Win32/Zbot.gen!R [Microsoft]
• Trojan-Dropper.Win32.Zbot [Ikarus]

• 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	Alias
1	%System%\lowsec\local.ds %System%\lowsec\user.ds	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
2	%System%\lowsec\user.ds.lll	276 bytes	MD5: 0x7EEEF8DAD40C5E8B864DB408852C5A8E SHA-1: 0xD4BF2B36AE490275A62D4E4407E32E583366A98C	(not available)
3	[file and pathname of the sample #1]	83,456 bytes	MD5: 0xC1A3FB6FEA94982ECB1D092D0095FC07 SHA-1: 0x1DD74057FF2773450484CAEF183DFE4C69D5037C	Packed.Generic.232 [Symantec] Trojan-Dropper.Win32.Zbot.i [Kaspersky Lab] Generic PWS.y!dh [McAfee] Mal/Zbot-O [Sophos] PWS:Win32/Zbot.gen!R [Microsoft] Trojan-Dropper.Win32.Zbot [Ikarus]
4	%System%\sdra64.exe	182,272 bytes	MD5: 0x6FD67E8A51C05B2A57A3A93444233D26 SHA-1: 0xDCDBF76E4B636DAB497F075C53028C74E44C7493	Packed.Generic.232 [Symantec] Trojan-Dropper.Win32.Zbot.i [Kaspersky Lab] Mal/Zbot-O [Sophos] PWS:Win32/Zbot.gen!R [Microsoft]

• 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%_0005CA7B"
• [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"