Submission Summary:

• Submission details:
• Submission received: 12 October 2012, 16:51:53
• Processing time: 9 min 4 sec
• Submitted sample:
• File MD5: 0x7B9F0A74820A00B34CC57E7C02D1492C
• File SHA-1: 0xF837BE9E90AFD4C8DD2197C424E8B779648DA90C
• Filesize: 86,016 bytes
• Alias:
• W32.Cridex [Symantec]
• Trojan-Spy.Win32.Zbot [Ikarus]

• Summary of the findings:

What's been found	Severity Level
Produces outbound traffic.
Downloads/requests other files from Internet.
Creates a startup registry entry.

Technical Details:

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%AppData%\KB00121600.exe	86,016 bytes	MD5: 0x7B9F0A74820A00B34CC57E7C02D1492C SHA-1: 0xF837BE9E90AFD4C8DD2197C424E8B779648DA90C	W32.Cridex [Symantec] Trojan-Spy.Win32.Zbot [Ikarus]
2	%Temp%\exp1.tmp	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)

• Notes:
• %AppData% is a variable that refers to the file system directory that serves as a common repository for application-specific data. A typical path is C:\Documents and Settings\[UserName]\Application Data.
• %Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).

• The following directory was created:
• %AppData%\25BC2D7B

Memory Modifications

• There were new processes created in the system:

• There was a new memory page created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
explorer.exe	%Windir%\explorer.exe	102,400 bytes

• Notes:
• %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

Registry Modifications

• The following Registry Keys were created:
• HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CFBDC89D4
• HKEY_CURRENT_USER\Software\Microsoft\Windows NT\S25BC2D7B

• The newly created Registry Value is:
• [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
• KB00121600.exe = ""%AppData%\KB00121600.exe""

so that KB00121600.exe runs every time Windows starts

Other details

• To mark the presence in the system, the following Mutex objects were created:
• Local\XMM0000041C
• Local\XMI0000041C
• Local\XMRFB119394
• Local\XMM0000009C
• Local\XMI0000009C
• Local\XMM000000C8
• Local\XMI000000C8
• Local\XMM000000E4
• Local\XMI000000E4

• The following Internet Connection was established:

Outbound traffic (potentially malicious)

• There was an outbound traffic produced on port 8080: