Submission Summary:

• Submission details:
• Submission received: 14 December 2008, 18:48:03
• Processing time: 6 min 6 sec
• Submitted sample:
• File MD5: 0x8C039B808C985787BD2927AB4B5CE0D4
• File SHA-1: 0xD9B790367553755744814F189BDC6A3D67FAD1E8
• Filesize: 33,792 bytes
• Alias:
• Win32.Virut.Gen [PCTools]
• W32.Virut!gen [Symantec]
• Virus.Win32.Virut.n [Kaspersky Lab]
• FakeAlert-AG.gen.c [McAfee]
• PE_VIRUT.XQ [Trend Micro]
• W32/Vetor-A [Sophos]
• Virus:Win32/Virut.AH [Microsoft]
• Trojan-Dropper.Kobcka [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 risk was identified in the system:

Security Risk	Description
Trojan-Downloader.Agent.BWH	Trojan-Downloader.Agent.BWH contacts a remote server in its attempt to secretly download additional threats onto affected machines.

• Attention! The following threat category was identified:

Threat Category	Description
	A virus capable to modify other files by infecting, prepending, or overwriting them them with its own body

File System Modifications

• The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\rs32net.exe [file and pathname of the sample #1]	33,792 bytes	MD5: 0x8C039B808C985787BD2927AB4B5CE0D4 SHA-1: 0xD9B790367553755744814F189BDC6A3D67FAD1E8	Win32.Virut.Gen [PCTools] W32.Virut!gen [Symantec] Virus.Win32.Virut.n [Kaspersky Lab] FakeAlert-AG.gen.c [McAfee] PE_VIRUT.XQ [Trend Micro] W32/Vetor-A [Sophos] Virus:Win32/Virut.AH [Microsoft] Trojan-Dropper.Kobcka [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).

Memory Modifications

• There were new processes created in the system:

Process Name	Process Filename	Main Module Size
rs32net.exe	%System%\rs32net.exe	61,440 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	61,440 bytes

Registry Modifications

• The newly created Registry Value is:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
• rs32net = "%System%\rs32net.exe"

so that rs32net.exe runs every time Windows starts

Other details

• There were registered attempts to establish connection with the remote hosts. The connection details are: