ThreatExpert Report: Suspicious.MH690, Mal/Packer, Backdoor:Win32/Hupigon.DZ

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Submission Summary:

Submission details:

Submission received: 1 October 2012, 08:22:38
Processing time: 8 min 1 sec
Submitted sample:

File MD5: 0x31A7291A67DE6E2C3B62941750A39C51
File SHA-1: 0x882F91B44B95C1FFAF775BE312ACA932CED6ADD2
Filesize: 266,862 bytes
Alias & packer info:

Suspicious.MH690 [Symantec]
Mal/Packer [Sophos]
Backdoor:Win32/Hupigon.DZ [Microsoft]
packed with: PE_Patch.RLPack [Kaspersky Lab]

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\3313.bat	122 bytes	MD5: 0x0D541856BA3BA27873B988C2BE1300A6 SHA-1: 0xDD61B1080BC31996AA9D827F7362BE59A39193F6	(not available)
2	%Windir%\Mroic Remote\MASTSS.exe [file and pathname of the sample #1]	266,862 bytes	MD5: 0x31A7291A67DE6E2C3B62941750A39C51 SHA-1: 0x882F91B44B95C1FFAF775BE312ACA932CED6ADD2	Suspicious.MH690 [Symantec] Mal/Packer [Sophos] Backdoor:Win32/Hupigon.DZ [Microsoft] packed with PE_Patch.RLPack [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.

The following file was modified:

%System%\drivers\etc\hosts

Notes:

%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).

The following directory was created:

%Windir%\Mroic Remote

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
mastss.exe	%Windir%\mroic remote\mastss.exe	N/A
[filename of the sample #1]	[file and pathname of the sample #1]	N/A

There were new memory pages created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
MASTSS.exe	%Windir%\mroic remote\mastss.exe	1,064,960 bytes
MASTSS.exe	%Windir%\mroic remote\mastss.exe	1,064,960 bytes

There was a new service created in the system:

Service Name	Display Name	Status	Service Filename
RemoteMASRSServer	RemoteMASRSS	"Running"	%Windir%\Mroic Remote\MASTSS.exe

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_REMOTEMASRSSERVER
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_REMOTEMASRSSERVER\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_REMOTEMASRSSERVER\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\RemoteMASRSServer
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\RemoteMASRSServer\Security
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\RemoteMASRSServer\Enum
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_REMOTEMASRSSERVER
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_REMOTEMASRSSERVER\0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_REMOTEMASRSSERVER\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RemoteMASRSServer
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RemoteMASRSServer\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RemoteMASRSServer\Enum

The newly created Registry Values are:

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

*NewlyCreated* = 0x00000000
ActiveService = "RemoteMASRSServer"

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

Service = "RemoteMASRSServer"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "RemoteMASRSS"

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

NextInstance = 0x00000001

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

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

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\RemoteMASRSServer\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\RemoteMASRSServer]

Type = 0x00000110
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%Windir%\Mroic Remote\MASTSS.exe"
DisplayName = "RemoteMASRSS"
ObjectName = "LocalSystem"
Description = "Remote MASRSS Remote Control!"

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

*NewlyCreated* = 0x00000000
ActiveService = "RemoteMASRSServer"

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

Service = "RemoteMASRSServer"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "RemoteMASRSS"

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

NextInstance = 0x00000001

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

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

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RemoteMASRSServer\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\RemoteMASRSServer]

Type = 0x00000110
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%Windir%\Mroic Remote\MASTSS.exe"
DisplayName = "RemoteMASRSS"
ObjectName = "LocalSystem"
Description = "Remote MASRSS Remote Control!"

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]

ProxyEnable = 0x00000000

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

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

ttxsiloskehyou

The HOSTS file was updated with the following URL-to-IP mapping:

The following Host Names were requested from a host database:

192.5.5.241
yvaen.3322.org

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

Remote Host	Port Number
yvaen.3322.org	86

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 86:

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