Submission Summary:

• Submission details:
• Submission received: 20 August 2009, 06:28:47
• Processing time: 7 min 30 sec
• Submitted sample:
• File MD5: 0xA61147F4B480D550204128FDF4EB3BCD
• File SHA-1: 0x26A577CC60C7E64749550C0AC71F29C6E9D0F44B
• Filesize: 81,920 bytes
• Alias:
• Packed.Generic.232 [Symantec]
• Trojan-Spy.Win32.Zbot.gen [Kaspersky Lab]
• Spy-Agent.eh [McAfee]
• Troj/Spy-CU [Sophos]
• PWS:Win32/Zbot.gen!R [Microsoft]
• Trojan-Spy.Win32.Zbot [Ikarus]
• Win-Trojan/Zbot.81920.C [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.
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.a	Trojan-Spy.Zbot.a is a banking trojan that will monitor logins to banking websites and send all captured information to a remote server. After installation, all malicious files are hidden from the user and monitoring of user activity is done through process injection.

• 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	543 bytes	MD5: 0x3CC68D68C5A9BEFF63579E26E95057B4 SHA-1: 0x6743B48869E084FE4C7DFC9B0DB6D97EF8989454	(not available)
3	[file and pathname of the sample #1]	81,920 bytes	MD5: 0xA61147F4B480D550204128FDF4EB3BCD SHA-1: 0x26A577CC60C7E64749550C0AC71F29C6E9D0F44B	Packed.Generic.232 [Symantec] Trojan-Spy.Win32.Zbot.gen [Kaspersky Lab] Spy-Agent.eh [McAfee] Troj/Spy-CU [Sophos] PWS:Win32/Zbot.gen!R [Microsoft] Trojan-Spy.Win32.Zbot [Ikarus] Win-Trojan/Zbot.81920.C [AhnLab]
4	%System%\sdra64.exe	577,024 bytes	MD5: 0x9A558A40C28E27C93C0476B79CB149DE SHA-1: 0x2EBA16EEB1243C08766DAF2A9AED607D92624730	Packed.Generic.232 [Symantec] Trojan-Spy.Win32.Zbot.gen [Kaspersky Lab] Spy-Agent.eh [McAfee] Mal/Zbot-O [Sophos] PWS:Win32/Zbot.gen!R [Microsoft] Win-Trojan/Zbot.81920.C [AhnLab]

• 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\{334613DB-50C1-B3BE-95ED-E9915A134FF1}
• 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%_00058266"
• [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{334613DB-50C1-B3BE-95ED-E9915A134FF1}]
• {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\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"