ThreatExpert Report: ZeroAccess!cfg, Mal/ZAccConf-A

Submission Summary:

Submission details:

Submission received: 23 September 2012, 02:16:26
Processing time: 9 min 43 sec
Submitted sample:

File MD5: 0x316BA5C1C12BE1A53714B1154E8F654A
File SHA-1: 0x55A389C59E6B14432A2948913B7320C70B6BA832
Filesize: 212,480 bytes

Summary of the findings:

What's been found	Severity Level
Creates fake Recycle Bin folder.
Downloads/requests other files from Internet.

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	c:\RECYCLER\S-1-5-18\$cbf7078772f9b6ef7e3c8c19ccb74892\@	2,048 bytes	MD5: 0x8A5A26397ABABDDDCC56C5DF2FE1355F SHA-1: 0xC115C8BFF65E16894FF69A4F6EC8597BAE72A967	ZeroAccess!cfg [McAfee] Mal/ZAccConf-A [Sophos]
2	c:\RECYCLER\S-1-5-18\$cbf7078772f9b6ef7e3c8c19ccb74892\n c:\RECYCLER\S-1-5-21-606747145-764733703-839522115-1003\$cbf7078772f9b6ef7e3c8c19ccb74892\n	77,312 bytes	MD5: 0x21D5DD195FA8CDB968B91994FE581FE0 SHA-1: 0xB75CBB788AF745A90C645DF161FD84C7431F5702	(not available)
3	c:\RECYCLER\S-1-5-21-606747145-764733703-839522115-1003\$cbf7078772f9b6ef7e3c8c19ccb74892\@	2,048 bytes	MD5: 0x7104C12C79761B47798252312482A0B7 SHA-1: 0x482A9448E9BCB8AA8FFFE477BFF30C8112E3239D	ZeroAccess!cfg [McAfee] Mal/ZAccConf-A [Sophos]
4	%Windir%\assembly\GAC\Desktop.ini	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
5	[file and pathname of the sample #1]	212,480 bytes	MD5: 0x316BA5C1C12BE1A53714B1154E8F654A SHA-1: 0x55A389C59E6B14432A2948913B7320C70B6BA832	(not available)

Note:

%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:

c:\RECYCLER\S-1-5-18
c:\RECYCLER\S-1-5-18\$cbf7078772f9b6ef7e3c8c19ccb74892
c:\RECYCLER\S-1-5-18\$cbf7078772f9b6ef7e3c8c19ccb74892\L
c:\RECYCLER\S-1-5-18\$cbf7078772f9b6ef7e3c8c19ccb74892\U
c:\RECYCLER\S-1-5-21-606747145-764733703-839522115-1003\$cbf7078772f9b6ef7e3c8c19ccb74892
c:\RECYCLER\S-1-5-21-606747145-764733703-839522115-1003\$cbf7078772f9b6ef7e3c8c19ccb74892\L
c:\RECYCLER\S-1-5-21-606747145-764733703-839522115-1003\$cbf7078772f9b6ef7e3c8c19ccb74892\U
%Windir%\assembly\GAC

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]	249,856 bytes

The following modules were loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
y	%System%\y	Process name: services.exe Process filename: %System%\services.exe Address space: 0x6F0000 - 0x70C000
y	%System%\y	Process name: explorer.exe Process filename: %Windir%\explorer.exe Address space: 0x1640000 - 0x165C000

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\{fbeb8a05-beee-4442-804e-409d6c4515e9}
HKEY_CURRENT_USER\Software\Classes\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InprocServer32

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\Classes\CLSID\{fbeb8a05-beee-4442-804e-409d6c4515e9}\InprocServer32]

ThreadingModel = "Both"
(Default) = "C:\RECYCLER\S-1-5-21-606747145-764733703-839522115-1003\$cbf7078772f9b6ef7e3c8c19ccb74892\n."

Other details

The following HTTP URLs were started reading:

http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=1&digits=10&siteId=31151619
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=2&digits=10&siteId=31151740
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=3&digits=10&siteId=31151749
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=4&digits=10&siteId=31151750
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=5&digits=10&siteId=31151620
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=6&digits=10&siteId=31151639
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=7&digits=10&siteId=31151640
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=8&digits=10&siteId=31151649
http://forever-counters.com/5699145-24B8EBEDAA47374020E664A2406FB684/counter.img?theme=9&digits=10&siteId=31151650

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