ThreatExpert Report: ZeroAccess, Trojan.Win32.Small, Trojan.Gen.2, ZeroAccess.ee..

Submission Summary:

Submission details:

Submission received: 13 June 2012, 09:51:48
Processing time: 9 min 2 sec
Submitted sample:

File MD5: 0xED56383BEC2201CFAFA38BEDF8950CFB
File SHA-1: 0x9444BE15314189E9628A14B4BB0E108FC13DDD31
Filesize: 186,880 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: 0x28D818A98C170BCA1E8D5ECD19993B12 SHA-1: 0x3C4B183D632E15585D844E656FD8ADD488971079	(not available)
2	%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\n %Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\n	52,224 bytes	MD5: 0x834ED66B186BB59FD97AEE0BCDD81244 SHA-1: 0x768763EEC7D21EB1460174C2A7C29A1F7647838C	(not available)
3	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\@	2,048 bytes	MD5: 0x30ED21DF1ED97535DDBE997C2F9C5EB5 SHA-1: 0x4EA798487870CE2B937E506A79697CCFE46E8B94	(not available)
4	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\00000001.@	1,648 bytes	MD5: 0x97054DA52301ECE758C26F5FE2682426 SHA-1: 0x0C891110EA841F1AE8A0263D743F34B431EC9031	ZeroAccess [McAfee] Trojan.Win32.Small [Ikarus]
5	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\80000000.@	12,288 bytes	MD5: 0x1BF005160D6C0469601128D75E8A0044 SHA-1: 0x4F83372BD54AB7BFDB4A153488F820CF00C7A89B	Trojan.Gen.2 [Symantec] ZeroAccess.ee [McAfee] Trojan.Win32.Sirefef [Ikarus]
6	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\800000cb.@	18,944 bytes	MD5: 0x7A83211285E4233E23C3C3BE3AF0010D SHA-1: 0xA0E438BA0A1C3427E2FFA0DAF2749840C664D2DC	Trojan Horse [Symantec] ZeroAccess.eh [McAfee] Trojan.Win32.Sirefef [Ikarus]
7	[file and pathname of the sample #1]	186,880 bytes	MD5: 0xED56383BEC2201CFAFA38BEDF8950CFB SHA-1: 0x9444BE15314189E9628A14B4BB0E108FC13DDD31	(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
IEXPLORE.EXE	%ProgramFiles%\internet explorer\iexplore.exe	307,200 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).
%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

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

Module Name	Module Filename	Address Space Details
n	%System%\n	Process name: IEXPLORE.EXE Process filename: %ProgramFiles%\internet explorer\iexplore.exe Address space: 0x45670000 - 0x45680000

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
184.172.204.122	80
216.254.228.253	16464

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

http://livecounter.co/count.php?id=526&c=6&d=7&s=21
http://livecounter.co/count.php?id=526&c=7&d=7&s=30
http://livecounter.co/count.php?id=526&c=8&d=7&s=31

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 16464:

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