ThreatExpert Report: PWS-Zbot.gen.aop, Backdoor.Win32.Azbreg

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Submission Summary:

Submission details:

Submission received: 25 October 2012, 16:12:51
Processing time: 9 min 21 sec
Submitted sample:

File MD5: 0x22E45381E07AA64C55439E446F14B050
File SHA-1: 0xBBC3F00198A1232D6A9705783CEC3F455EEB321E
Filesize: 359,937 bytes
Alias:

PWS-Zbot.gen.aop [McAfee]
Backdoor.Win32.Azbreg [Ikarus]

Summary of the findings:

What's been found	Severity Level
Creates a startup registry entry.

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%AppData%\Apfim\ekfyg.exe	359,937 bytes	MD5: 0x95C1909E5CCC93D229BE88DF829E61E6 SHA-1: 0x14A744DD0D7B909495D7661E5056340CE8DE972E	PWS-Zbot.gen.aop [McAfee] Backdoor.Win32.Azbreg [Ikarus]
2	%AppData%\odep.mey	1,009 bytes	MD5: 0x3F36D0DF7E3DCFAA23F53A23865CBA25 SHA-1: 0x31C983279AA6A9D68E57C5019018BE5118E3B058	(not available)
3	%Temp%\tmp7567f2be.bat	168 bytes	MD5: 0x104C59D8CA44C675383D1E9DAB524D10 SHA-1: 0xF441DF3E0B2A5DBC3A94AD8220483CEBC8C768C4	(not available)
4	[file and pathname of the sample #1]	359,937 bytes	MD5: 0x22E45381E07AA64C55439E446F14B050 SHA-1: 0xBBC3F00198A1232D6A9705783CEC3F455EEB321E	PWS-Zbot.gen.aop [McAfee] Backdoor.Win32.Azbreg [Ikarus]

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.
%Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).

The following directory was created:

%AppData%\Apfim

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
ekfyg.exe	%AppData%\apfim\ekfyg.exe	380,928 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	380,928 bytes

There was a new memory page created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
cmd.exe	%System%\cmd.exe	311,296 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).

Registry Modifications

The following Registry Key was created:

HKEY_CURRENT_USER\Software\Microsoft\Cyyjwy

The newly created Registry Values are:

[HKEY_CURRENT_USER\Identities]

Identity Login = 0x00098053

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

{3DFA1AE4-115C-AD7B-A6BA-A75086AF8442} = ""%AppData%\Apfim\ekfyg.exe""

so that ekfyg.exe runs every time Windows starts

[HKEY_CURRENT_USER\Software\Microsoft\Cyyjwy]

25h41798 = "F0/0W9ymyQzal2Z7h0sEIA=="
29719eb6 = 0x5B9A4F2F
21j2506 = "JCSaW6GQ+AzqlxN7"

Other details

To mark the presence in the system, the following Mutex object was created:

Local\{FA4803F7-084F-6AC9-A6BA-A75086AF8442}

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