ThreatExpert Report: Backdoor.Trojan, Backdoor.Win32.Xyligan.uob, Backdoor:Win32/Jukbot.B..

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Submission Summary:

Submission details:

Submission received: 30 July 2012, 19:14:28
Processing time: 9 min 20 sec
Submitted sample:

File MD5: 0xB76937CA0119A945C18E68C4207B7722
File SHA-1: 0x24549FFC689003BAC8155719E1B7155B8C4F2AAF
Filesize: 36,864 bytes
Alias:

Backdoor.Trojan [Symantec]
Backdoor.Win32.Xyligan.uob [Kaspersky Lab]
Backdoor:Win32/Jukbot.B [Microsoft]
Backdoor.Win32.Xyligan [Ikarus]

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	%System%\qcwkun.exe [file and pathname of the sample #1]	36,864 bytes	MD5: 0xB76937CA0119A945C18E68C4207B7722 SHA-1: 0x24549FFC689003BAC8155719E1B7155B8C4F2AAF	Backdoor.Trojan [Symantec] Backdoor.Win32.Xyligan.uob [Kaspersky Lab] Backdoor:Win32/Jukbot.B [Microsoft] Backdoor.Win32.Xyligan [Ikarus]

Note:

%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).

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
qcwkun.exe	%System%\qcwkun.exe	86,016 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	86,016 bytes

There was a new service created in the system:

Service Name	Display Name	Status	Service Filename
rcmd	RemoteService	"Running"	%System%\qcwkun.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_RCMD
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_RCMD\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_RCMD\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\rcmd
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\rcmd\Security
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\rcmd\Enum
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_RCMD
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_RCMD\0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_RCMD\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\rcmd
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\rcmd\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\rcmd\Enum

The newly created Registry Values are:

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

*NewlyCreated* = 0x00000000
ActiveService = "rcmd"

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

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

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

NextInstance = 0x00000001

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

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

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\rcmd\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\rcmd]

Type = 0x00000010
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%System%\qcwkun.exe"
DisplayName = "RemoteService"
ObjectName = "LocalSystem"
Description = "Resource Kit"

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

*NewlyCreated* = 0x00000000
ActiveService = "rcmd"

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

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

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

NextInstance = 0x00000001

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

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

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\rcmd\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\rcmd]

Type = 0x00000010
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%System%\qcwkun.exe"
DisplayName = "RemoteService"
ObjectName = "LocalSystem"
Description = "Resource Kit"

The following Registry Values were modified:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ServiceCurrent]

(Default) =

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ServiceCurrent]

(Default) =

Other details

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

China

The following port was open in the system:

Port	Protocol	Process
1034	TCP	qcwkun.exe (%System%\qcwkun.exe)

The following Host Name was requested from a host database:

fynework.dns0755.net

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

Remote Host	Port Number
fynework.dns0755.net	9513

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 9513:

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