ThreatExpert Report: Mal/ZAccConf-A

Submission Summary:

Submission details:

Submission received: 11 September 2012, 07:51:27
Processing time: 9 min 46 sec
Submitted sample:

File MD5: 0x82C164449EE5DCF7A39D476DB58B8B91
File SHA-1: 0x141BAE35E7B85020688A9331E1964095BC165011
Filesize: 214,016 bytes

Summary of the findings:

What's been found	Severity Level
Creates fake Recycle Bin folder.

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: 0x8AD2BEFD528CA1C8EAE7C8FB177218AA SHA-1: 0xBE7B6A7D9E27348F2D5890011FBCD72ABFB441AC	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	77,824 bytes	MD5: 0xE2169E3DB46ACF9168D4A874F4259014 SHA-1: 0x34F01A710E736A2A3BD171A2DEB79E4088BE55AD	(not available)
3	c:\RECYCLER\S-1-5-21-606747145-764733703-839522115-1003\$cbf7078772f9b6ef7e3c8c19ccb74892\@	2,048 bytes	MD5: 0x45A23C811FD4FC640C2EA333BF22E2E0 SHA-1: 0x61FC1AD662BF6472B6D547DEF435D80C48775FF2	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]	214,016 bytes	MD5: 0x82C164449EE5DCF7A39D476DB58B8B91 SHA-1: 0x141BAE35E7B85020688A9331E1964095BC165011	(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]	241,664 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 - 0x70A000
y	%System%\y	Process name: explorer.exe Process filename: %Windir%\explorer.exe Address space: 0x1640000 - 0x165A000

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."

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