ThreatExpert Report: Mal/ZAccConf-A, Trojan.Gen.2, ZeroAccess, Mal/ZAccess-X, Trojan:Win32/Sirefef..

Submission Summary:

Submission details:

Submission received: 6 August 2012, 03:24:51
Processing time: 10 min 40 sec
Submitted sample:

File MD5: 0xC2501178116AACD5206854CC7D9861A8
File SHA-1: 0x12EA6B85B700A901E7660A2D7E3FF4B79277A4DF
Filesize: 192,512 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 categories were identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system

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: 0x32647A70C9C88E0E652816288E61CB7B SHA-1: 0xE2D6C2AF671E00CBB75EFF213CF19988D1E82ACB	Mal/ZAccConf-A [Sophos]
2	%AppData%\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\n %Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\n	70,656 bytes	MD5: 0x16628EE602E9AABC69A466F245DD761C SHA-1: 0xC6F44FED037556BEA06244D131391F15B55BCF77	(not available)
3	%Windir%\assembly\GAC\Desktop.ini	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
4	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\@	2,048 bytes	MD5: 0x70C766B74C9E4E4993D3E729F498CFBC SHA-1: 0x753776CA37963932101F325266E7B2524A99EE1C	Mal/ZAccConf-A [Sophos]
5	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\L\00000004.@	804 bytes	MD5: 0xEFC0C6EF865D96745E67B706FF06CC74 SHA-1: 0xC2BF004975D7306A776B5A293ADD756E117E384F	(not available)
6	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\00000004.@	2,048 bytes	MD5: 0xFE2EB24E6BD36B8BE3869ECE85AA72BC SHA-1: 0xA3AA67884223F3E8F8C52AFDBC779DCB19FF00E6	Trojan.Gen.2 [Symantec] ZeroAccess [McAfee] Mal/ZAccess-X [Sophos] Trojan:Win32/Sirefef [Microsoft] Trojan.Win32.Sirefef [Ikarus]
7	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\00000008.@	232,960 bytes	MD5: 0x80AEBC81A5D1EB392BD7C615A779918C SHA-1: 0x1A9C6C8418E30BD33923AECA0D7EF826021322DC	Trojan.Gen [Symantec] ZeroAccess [McAfee] Mal/ZAccess-CA [Sophos] Trojan:Win32/Sirefef.AO [Microsoft] Trojan.Win32.Sirefef [Ikarus]
8	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\000000cb.@	1,632 bytes	MD5: 0x6E71F4274113197AD75262AF24FB1B09 SHA-1: 0x97D178F9F9541E90C2A527C3FF97A43A1B69CB25	Trojan.Gen.2 [Symantec] ZeroAccess [McAfee] Mal/ZAccess-X [Sophos] Trojan:Win32/Sirefef [Microsoft] Trojan.Win32.Sirefef [Ikarus]
9	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\80000000.@	13,312 bytes	MD5: 0x54ED1955EDB126599E3814B6E251BCA6 SHA-1: 0x978E4706B700938780D134263B519E5BF17A8AED	Trojan.Zeroaccess.B [Symantec] ZeroAccess.ee [McAfee] Mal/ZAccess-CA [Sophos] Trojan:Win32/Sirefef.AG [Microsoft] Trojan.Win32.Sirefef [Ikarus]
10	%Windir%\Installer\{cbf70787-72f9-b6ef-7e3c-8c19ccb74892}\U\80000032.@	92,672 bytes	MD5: 0xAC234AB68624DC3DAEE208AAB2E7D222 SHA-1: 0xA731C7E05B95FE83343D28509F204D30BC6DE440	Trojan.Zeroaccess.B [Symantec] Backdoor.Win32.ZAccess.wrq [Kaspersky Lab] ZeroAccess.gb [McAfee] Mal/ZAccess-CA [Sophos] Trojan:Win32/Sirefef.AN [Microsoft] Trojan.Win32.Alureon [Ikarus]
11	[file and pathname of the sample #1]	192,512 bytes	MD5: 0xC2501178116AACD5206854CC7D9861A8 SHA-1: 0x12EA6B85B700A901E7660A2D7E3FF4B79277A4DF	(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%\assembly\GAC
%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	45,056 bytes
services.exe	%System%\services.exe	118,784 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_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Main\featurecontrol
HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Main\featurecontrol\FEATURE_BROWSER_EMULATION
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 Values are:

[HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Main\featurecontrol\FEATURE_BROWSER_EMULATION]

svchost.exe = 0x00001F40

[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
24.228.102.100	16471

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

http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=6&digits=10&siteId=31151640
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=7&digits=10&siteId=31151649
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=8&digits=10&siteId=31151650

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 16471:

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