ThreatExpert Report: Trojan-Dropper.Win32.Delf, Backdoor.Win32.Vipdataend

Submission Summary:

Submission details:

Submission received: 25 October 2012, 13:04:15
Processing time: 8 min 26 sec
Submitted sample:

File MD5: 0xAD2E1FAE851E527E691EE53877840EDD
File SHA-1: 0xEAF56FB6546B7C134945864841735669625F598F
Filesize: 305,664 bytes

Summary of the findings:

What's been found	Severity Level
Produces outbound traffic.
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%\Microsoft\Windows\.data	466 bytes	MD5: 0xB074392F8629EDB965349928028FAEE3 SHA-1: 0xDD4A42C83F5AB6C9FE9F9ECEE3BC1A2B96D66181	(not available)
2	%AppData%\Microsoft\Windows\msshell.exe	18,432 bytes	MD5: 0x4C3B10F4BD2717818E3555278F69E7F4 SHA-1: 0x6652F0FD5FE7338950FDCD2C47C79A8014B1CF57	Trojan-Dropper.Win32.Delf [Ikarus]
3	%AppData%\Microsoft\Windows\unicode2.nls	162,304 bytes	MD5: 0x3292C2BC1D01FEDC8609C89FCE066DCF SHA-1: 0x705F477B29E397729816695B485FB9071F8C33A7	Backdoor.Win32.Vipdataend [Ikarus]
4	[file and pathname of the sample #1]	305,664 bytes	MD5: 0xAD2E1FAE851E527E691EE53877840EDD SHA-1: 0xEAF56FB6546B7C134945864841735669625F598F	(not available)

Note:

%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.

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
msshell.exe	%AppData%\microsoft\windows\msshell.exe	49,152 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	339,968 bytes

The following module was loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
unicode2.nls	%AppData%\Microsoft\Windows\unicode2.nls	Process name: explorer.exe Process filename: %Windir%\explorer.exe Address space: 0xD70000 - 0xD9C000

Notes:

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

Registry Modifications

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

MSShell = "%AppData%\Microsoft\Windows\msshell.exe"

so that msshell.exe runs every time Windows starts

Other details

There was registered attempt to establish connection with the remote host. The connection details are:

Remote Host	Port Number
89.144.61.145	443

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 443:

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