ThreatExpert Report: Backdoor.Trojan, Trojan-Downloader.Win32.Agent.wgto, Trojan.SuspectCRC..

Visit ThreatExpert web site

Close Report

Submission Summary:

Submission details:

Submission received: 13 August 2012, 19:15:08
Processing time: 8 min 9 sec
Submitted sample:

File MD5: 0x199DC55C701853B67A1D03CEA81ECD63
File SHA-1: 0xB4154E7F6FB482B946F36B95646F38B8758FDE4F
Filesize: 83,357 bytes
Alias:

Backdoor.Trojan [Symantec]
Trojan-Downloader.Win32.Agent.wgto [Kaspersky Lab]
Trojan.SuspectCRC [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.
Contains characteristics of an identified security risk.

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 program that downloads files to the local computer that may represent security risk

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\sdinfo.tmp	27 bytes	MD5: 0xFCEA95BC7B64E427C3E49D7C4DC20F56 SHA-1: 0x183936F90DB6573008A862D9E7824EB7A33C86BE	(not available)
2	%System%\Rlmstfy.cc3	73,728 bytes	MD5: 0xA5489C742ED4E5B2AD33577CF601ACC1 SHA-1: 0xDD27E21BDECBCA58D5E9E96721BB584DAA204E12	Backdoor.Trojan [Symantec] Backdoor.Win32.Nbdd.myv [Kaspersky Lab] Backdoor-FGN [McAfee] W32/NetBot-A [Sophos] Backdoor:Win32/Netbot.D [Microsoft] Backdoor.Win32.Venik [Ikarus]
3	[file and pathname of the sample #1]	83,357 bytes	MD5: 0x199DC55C701853B67A1D03CEA81ECD63 SHA-1: 0xB4154E7F6FB482B946F36B95646F38B8758FDE4F	Backdoor.Trojan [Symantec] Backdoor.Win32.Nbdd.myv, Trojan-Downloader.Win32.Agent.wgto [Kaspersky Lab] Trojan.SuspectCRC [Ikarus]
4	%Windir%\Temp\201289191824.exe	11,264 bytes	MD5: 0xEF99C779B9F9AB57114FCB80D77877DA SHA-1: 0x1098135ED345FFE17147959625CA15A2DB14D3E7	Suspicious.MH690 [Symantec] Trojan-Downloader.Win32.Agent.wgto [Kaspersky Lab] Mal/Behav-044 [Sophos] Trojan.SuspectCRC [Ikarus] packed with PE_Patch.PECompact [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).
%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).
%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
201289191824.exe	%Windir%\temp\201289191824.exe	28,672 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	184,320 bytes
201289191822.exe	%Windir%\temp\201289191822.exe	106,496 bytes

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

Module Name	Module Filename	Address Space Details
rlmstfy.cc3	%System%\rlmstfy.cc3	Process name: svchost.exe Process filename: %System%\svchost.exe Address space: 0x5A0000 - 0x5B8000

There was a new service created in the system:

Service Name	Display Name	Status	Service Filename
MediaCenter	MS Media Control Center	"Running"	%System%\svchost.exe -k start

The following system services were modified:

Service Name	Display Name	New Status	Service Filename
ALG	Application Layer Gateway Service	"Stopped"	%System%\alg.exe
SharedAccess	Windows Firewall/Internet Connection Sharing (ICS)	"Stopped"	%System%\svchost.exe -k netsvcs

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_MEDIACENTER
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_MEDIACENTER\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_MEDIACENTER\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter\Security
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter\Enum
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_MEDIACENTER
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_MEDIACENTER\0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_MEDIACENTER\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter\Enum

The newly created Registry Values are:

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

gymon = "%Windir%\temp\201289191824.exe"

so that 201289191824.exe runs every time Windows starts

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

start = 4D 65 64 69 61 43 65 6E 74 65 72 00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_MEDIACENTER\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "MediaCenter"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_MEDIACENTER\0000]

Service = "MediaCenter"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "MS Media Control Center"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_MEDIACENTER]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter\Enum]

0 = "Root\LEGACY_MEDIACENTER\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter\Security]

Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter\Parameters]

ServiceDll = "%System%\Rlmstfy.cc3"
ServiceMain = "CAONIMADESHAWO"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MediaCenter]

Type = 0x00000010
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%System%\svchost.exe -k start"
DisplayName = "MS Media Control Center"
ObjectName = "LocalSystem"
Description = "Provides support for media palyer. This service can't be stoped."

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_MEDIACENTER\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "MediaCenter"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_MEDIACENTER\0000]

Service = "MediaCenter"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "MS Media Control Center"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_MEDIACENTER]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter\Enum]

0 = "Root\LEGACY_MEDIACENTER\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter\Security]

Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter\Parameters]

ServiceDll = "%System%\Rlmstfy.cc3"
ServiceMain = "CAONIMADESHAWO"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MediaCenter]

Type = 0x00000010
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%System%\svchost.exe -k start"
DisplayName = "MS Media Control Center"
ObjectName = "LocalSystem"
Description = "Provides support for media palyer. This service can't be stoped."

The following Registry Values were modified:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ServiceCurrent]

(Default) =

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ServiceCurrent]

(Default) =

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]

Cookies =
History =

Other details

Analysis of the file resources indicate the following possible country of origin:

China

The following Host Names were requested from a host database:

98.126.151.114
192.5.5.241
www4.wikiplum.com

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

Remote Host	Port Number
98.126.151.114	4474
www4.wikiplum.com	8888

The following Internet download was started (the retrieved bits are saved into the local file):

URL to be downloaded	Filename for the downloaded bits
http://o0.nbddos.com:86/r2.exe	c:\1.exe

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 8888:

All content ("Information") contained in this report is the copyrighted work of Threat Expert Ltd and its associated companies ("ThreatExpert") and may not be copied without the express permission of ThreatExpert.

The Information is provided on an "as is" basis. ThreatExpert disclaims all warranties, whether express or implied, to the maximum extent permitted by law, including the implied warranties that the Information is merchantable, of satisfactory quality, accurate, fit for a particular purpose or need, or non-infringing, unless such implied warranties are legally incapable of exclusion. Further, ThreatExpert does not warrant or make any representations regarding the use or the results of the use of the Information in terms of their correctness, accuracy, reliability, or otherwise.