Submission Summary:

• Submission details:
• Submission received: 2 February 2009, 14:09:27
• Processing time: 5 min 48 sec
• Submitted sample:
• File MD5: 0x8F5668C69FB4924BA15313DCF87F4D42
• File SHA-1: 0x6ACB7F0D565C3270E48A7F220CB62328BDF42783
• Filesize: 54,784 bytes
• Alias:
• Trojan.Agent2!sd6 [PCTools]
• Trojan Horse [Symantec]
• Trojan.Win32.Agent2.mq [Kaspersky Lab]
• Mal/WaledPak-A [Sophos]
• PWS:Win32/Zbot.UO [Microsoft]
• Trojan.Win32.Agent2 [Ikarus]

• Summary of the findings:

What's been found	Severity Level
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

• Attention! Characteristics of the following security risks were identified in the system:

Security Risk	Description
Trojan-Spy.Zbot	Trojan-Spy.Zbot is a rootkit trojan which steals online banking information and downloads other malware as well. It opens backdoors on infected computer to allow malicious attacker unauthorized access.
Trojan.Agent2!sd6	Trojan.Agent2!sd6 is a malicious program that does not infect other files but may represents security risk for your computer and/or network environment.

• Attention! The following threat category was identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\ntos.exe	294,912 bytes	MD5: 0xB210348AD7137CD2180DA04913AED05A SHA-1: 0xFBE9DC4A3E057D6D1E99F159AD58DA99F8A27C1A	Trojan Horse [Symantec] Mal/WaledPak-A [Sophos] PWS:Win32/Zbot.UO [Microsoft]
2	[file and pathname of the sample #1]	54,784 bytes	MD5: 0x8F5668C69FB4924BA15313DCF87F4D42 SHA-1: 0x6ACB7F0D565C3270E48A7F220CB62328BDF42783	Trojan.Agent2!sd6 [PCTools] Trojan Horse [Symantec] Trojan.Win32.Agent2.mq [Kaspersky Lab] Mal/WaledPak-A [Sophos] PWS:Win32/Zbot.UO [Microsoft] Trojan.Win32.Agent2 [Ikarus]
3	%System%\wsnpoem\audio.dll	209 bytes	MD5: 0x84997EB37A293DA3E00B819D6B852CA7 SHA-1: 0x17CF410A0E6EB580D565164F7EB719D33FDEF479	(not available)
4	%System%\wsnpoem\video.dll	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)

• 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%\wsnpoem

Registry Modifications

• The following Registry Keys were created:
• HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{19127AD2-394B-70F5-C650-B97867BAA1F7}
• 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%_0002E66E"
• [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{334613DB-50C1-B3BE-95ED-E9915A134FF1}]
• {F710FA10-2031-3106-8872-93A2B5C5C620} = F7 09 F2 0D
• {E716FA10-2031-AA96-8E72-93A205C5C62C} = 47 09 F2 0D
• [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}]
• {F710FA10-2031-3106-8872-93A2B5C5C620} = F7 09 F2 0D
• {E716FA10-2031-AA96-8E72-93A205C5C62C} = 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%\ntos.exe,"

so that ntos.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"