ThreatExpert Report: Suspicious.BredoLab, Backdoor.Win32.Shiz.fvyh

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Submission Summary:

Submission details:

Submission received: 11 September 2012, 05:16:56
Processing time: 13 min 37 sec
Submitted sample:

File MD5: 0xF5A5E28056A76C45B66707CB94452595
File SHA-1: 0xB09304B21DAE9C3D6A6D341DA747C53A70B505F3
Filesize: 317,440 bytes
Alias:

Suspicious.BredoLab [Symantec]
Backdoor.Win32.Shiz.fvyh [Kaspersky Lab]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\2.tmp %Windir%\AppPatch\rwsuhn.exe	317,440 bytes	MD5: 0xF5A5E28056A76C45B66707CB94452595 SHA-1: 0xB09304B21DAE9C3D6A6D341DA747C53A70B505F3	Suspicious.BredoLab [Symantec] Backdoor.Win32.Shiz.fvyh [Kaspersky Lab]

Notes:

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

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	2,322,432 bytes

Registry Modifications

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]

cd1a40 = "???J???RI???????'??3?cp

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

userinit = "%Windir%\apppatch\rwsuhn.exe"

so that rwsuhn.exe runs every time Windows starts

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

run = "%Windir%\apppatch\rwsuhn.exe"

so that rwsuhn.exe runs every time Windows starts

Other details

To mark the presence in the system, the following Mutex objects were created:

Global\MicrosoftSysenterGate7
internal_wutex_0x0000009c
internal_wutex_0x000000d0

The following Internet Connection was established:

Server Name	Server Port	Connect as User	Connection Password
www.bing.com	80	(null)	(null)

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