ThreatExpert Report: Mal/EncPk-CK

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Submission Summary:

Submission details:

Submission received: 28 October 2012, 17:17:08
Processing time: 10 min 26 sec
Submitted sample:

File MD5: 0xCE35D03C9BAD34DEF9099B2064193FD8
File SHA-1: 0xF2F98A370D16F2E576A8234E1BC8030E00FFAEAB
Filesize: 84,581 bytes
Alias: Mal/EncPk-CK [Sophos]

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\97921.bat	99 bytes	MD5: 0x58269F0465F880424401DC13AE549A59 SHA-1: 0xAF5D3C417338555196670BEB4013FF53BEBA300A	(not available)
2	%Windir%\IPv6CertBrowsSvc.dll	84,581 bytes	MD5: 0xCE35D03C9BAD34DEF9099B2064193FD8 SHA-1: 0xF2F98A370D16F2E576A8234E1BC8030E00FFAEAB	Mal/EncPk-CK [Sophos]

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]	176,128 bytes

There was a new service created in the system:

Service Name	Display Name	Status	Service Filename
IPv6CertBrowsSvc	IPv6CertBrowsSvc	"Stopped"	%System%\svchost.exe -k ipv6svcs

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).

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_IPV6CERTBROWSSVC
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\IPv6CertBrowsSvc
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\IPv6CertBrowsSvc\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\IPv6CertBrowsSvc\Security
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\IPv6CertBrowsSvc\Enum
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_IPV6CERTBROWSSVC
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPv6CertBrowsSvc
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPv6CertBrowsSvc\Parameters
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPv6CertBrowsSvc\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPv6CertBrowsSvc\Enum

The newly created Registry Values are:

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

UserFaultCheck = "%System%\dumprep 0 -u"

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

ipv6svcs = "IPv6CertBrowsSvc"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "IPv6CertBrowsSvc"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000]

Service = "IPv6CertBrowsSvc"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "IPv6CertBrowsSvc"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_IPV6CERTBROWSSVC]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\IPv6CertBrowsSvc\Enum]

0 = "Root\LEGACY_IPV6CERTBROWSSVC\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\IPv6CertBrowsSvc\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\IPv6CertBrowsSvc\Parameters]

ServiceDll = "%Windir%\IPv6CertBrowsSvc.dll"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\IPv6CertBrowsSvc]

Type = 0x00000020
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%System%\svchost.exe -k ipv6svcs"
DisplayName = "IPv6CertBrowsSvc"
ObjectName = "LocalSystem"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "IPv6CertBrowsSvc"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_IPV6CERTBROWSSVC\0000]

Service = "IPv6CertBrowsSvc"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "IPv6CertBrowsSvc"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_IPV6CERTBROWSSVC]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPv6CertBrowsSvc\Enum]

0 = "Root\LEGACY_IPV6CERTBROWSSVC\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPv6CertBrowsSvc\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\IPv6CertBrowsSvc\Parameters]

ServiceDll = "%Windir%\IPv6CertBrowsSvc.dll"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPv6CertBrowsSvc]

Type = 0x00000020
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%System%\svchost.exe -k ipv6svcs"
DisplayName = "IPv6CertBrowsSvc"
ObjectName = "LocalSystem"

The following Registry Values were modified:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ServiceCurrent]

(Default) =

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ServiceCurrent]

(Default) =

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