ThreatExpert Report: Trojan.Gen, Backdoor.Win32.VB.gfbb, Generic.grp!ij, Mal/Generic-L..

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Submission Summary:

Submission details:

Submission received: 29 August 2012, 11:01:43
Processing time: 8 min 12 sec
Submitted sample:

File MD5: 0xC9223784182B290358D61699B17EDAE7
File SHA-1: 0x1ED4652437ADB4D5E42521CE97EF8B2919053980
Filesize: 155,648 bytes
Alias:

Trojan.Gen [Symantec]
Backdoor.Win32.VB.gfbb [Kaspersky Lab]
Generic.grp!ij [McAfee]
Mal/Generic-L [Sophos]
VirTool:Win32/VBInject.gen!IP [Microsoft]
Trojan.Win32.Klovbot [Ikarus]

Technical Details:

Possible Security Risk

Attention! The following threat categories were identified:

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

#	Filename(s)	File Size	File Hash	Alias
1	%Windir%\csrcs.exe [file and pathname of the sample #1]	155,648 bytes	MD5: 0xC9223784182B290358D61699B17EDAE7 SHA-1: 0x1ED4652437ADB4D5E42521CE97EF8B2919053980	Trojan.Gen [Symantec] Backdoor.Win32.VB.gfbb [Kaspersky Lab] Generic.grp!ij [McAfee] Mal/Generic-L [Sophos] VirTool:Win32/VBInject.gen!IP [Microsoft] Trojan.Win32.Klovbot [Ikarus]

Note:

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

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	49,152 bytes
csrcs.exe	%Windir%\csrcs.exe	49,152 bytes

Registry Modifications

The newly created Registry Value is:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

Microsofts = "%Windir%\csrcs.exe"

so that csrcs.exe runs every time Windows starts

Other details

To mark the presence in the system, the following Mutex object was created:

byvOlk

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

Remote Host	Port Number
199.180.132.107	80

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