ThreatExpert Report: Mal/ZAccConf-A, Generic.dx!b2z4, Mal/ZAccess-X, Trojan.Win32.Sirefef..

Submission Summary:

Submission details:

Submission received: 19 July 2012, 23:00:12
Processing time: 11 min 24 sec
Submitted sample:

File MD5: 0x1D221B72943837D6BFF6FA5204E00676
File SHA-1: 0x0824EF47E289CA43EA9237EBB17D41407AAB22AE
Filesize: 185,856 bytes

Summary of the findings:

What's been found	Severity Level
Produces outbound traffic.
Downloads/requests other files from Internet.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	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 files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\@	2,048 bytes	MD5: 0xE88CB2F68B24365A46A21ABB1402FCFB SHA-1: 0x09DFE8A60032B9CE4A41A1F2E82B2C623B7662A9	Mal/ZAccConf-A [Sophos]
2	%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\n %Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\n	48,640 bytes	MD5: 0xD737A492DA92181661400B0E4893AB6D SHA-1: 0xA5CA42E61F43F4A192A2F091DAED2A441D0F3DCA	(not available)
3	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\@	2,048 bytes	MD5: 0xC08CF76E733281CFF3C0F09210D6DF72 SHA-1: 0x8EAE98F34727AC69A919A223F9A604DE2109D0A2	Mal/ZAccConf-A [Sophos]
4	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\00000001.@	1,696 bytes	MD5: 0x218F559363F0BE9BDF0BADE486717862 SHA-1: 0x8E6ABE478C95262A1BB0FBA464DA119E64143A10	Generic.dx!b2z4 [McAfee] Mal/ZAccess-X [Sophos] Trojan.Win32.Sirefef [Ikarus]
5	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\80000000.@	13,312 bytes	MD5: 0xA9200C6035A01D7C65CB20E737095070 SHA-1: 0x543F4BCDCA70979360389F9EB6DE40170D1D836C	Trojan.Zeroaccess [Symantec] ZeroAccess.ee [McAfee] Mal/ZAccess-CA [Sophos] Win64 [Ikarus]
6	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\800000cb.@	19,456 bytes	MD5: 0x4493ED95174AC75A859F86767C324E78 SHA-1: 0x71292BB55126F2406BF6D35C213B402ABB5128F2	ZeroAccess.eh [McAfee] Mal/ZAccess-CA [Sophos] Virus.Win32.Vundo [Ikarus]
7	[file and pathname of the sample #1]	185,856 bytes	MD5: 0x1D221B72943837D6BFF6FA5204E00676 SHA-1: 0x0824EF47E289CA43EA9237EBB17D41407AAB22AE	(not available)

Notes:

%AppData% is a variable that refers to the file system directory that serves as a common repository for application-specific data. A typical path is C:\Documents and Settings\[UserName]\Application Data.
%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

The following directories were created:

%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}
%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\L
%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U
%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}
%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\L
%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U

Memory Modifications

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

Process Name	Process Filename	Allocated Size
services.exe	%System%\services.exe	28,672 bytes
services.exe	%System%\services.exe	40,960 bytes
services.exe	%System%\services.exe	36,864 bytes

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 system service was modified:

Service Name	Display Name	New Status	Service Filename
ALG	Application Layer Gateway Service	"Stopped"	%System%\alg.exe

Registry Modifications

The following Registry Keys were created:

HKEY_CURRENT_USER\Software\Classes\CLSID\{42aedc87-2188-41fd-b9a3-0c966feabec1}
HKEY_CURRENT_USER\Software\Classes\CLSID\{42aedc87-2188-41fd-b9a3-0c966feabec1}\InprocServer32

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\Classes\CLSID\{42aedc87-2188-41fd-b9a3-0c966feabec1}\InprocServer32]

ThreadingModel = "Both"
(Default) = "%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\n."

The following Registry Value was modified:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{F3130CDB-AA52-4C3A-AB32-85FFC23AF9C1}\InprocServer32]

(Default) =

Other details

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

Remote Host	Port Number
213.108.252.185	80
97.103.163.249	16464

The data identified by the following URLs was then requested from the remote web server:

http://bigfatcounters.com/5699017-3C912481A04E584CDF231C519E1DF857/counter.img?theme=6&digits=10&siteId=624
http://bigfatcounters.com/5699017-3C912481A04E584CDF231C519E1DF857/counter.img?theme=7&digits=10&siteId=633
http://bigfatcounters.com/5699017-3C912481A04E584CDF231C519E1DF857/counter.img?theme=8&digits=10&siteId=634

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 16464:

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