ThreatExpert Report

Submission Summary:

Submission details:

Submission received: 11 December 2009, 05:21:18
Processing time: 10 min 56 sec
Submitted sample:

File MD5: 0x74AF2BA42786B3CB4D1A6B038219334D
File SHA-1: 0xCE9F9BE3F49B9EBEE5113010105182ADA8DCB83E
Filesize: 117,248 bytes

Summary of the findings:

What's been found	Severity Level
Threat characteristics of ZBot - a banking trojan that disables firewall, steals sensitive financial data (credit card numbers, online banking login details), makes screen snapshots, downloads additional components, and provides a hacker with the remote access to the compromised system.
Downloads/requests other files from Internet.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Trojan-Spy.Zbot.YETH	Trojan-Spy.Zbot.YETH is a rootkit trojan which steals online banking information and downloads other malware as well.

Attention! The following threat categories were identified:

Threat Category	Description
	A keylogger program that can capture all user keystrokes (including confidential details such username, password, credit card number, etc.)
	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
1	%System%\lowsec\local.ds	62,855 bytes	MD5: 0xBCFC97E98B8980B1495AFB5D9C3697DE SHA-1: 0x4503FBFA1BD3BE25608DBEA053CB9EC72517FB8F
2	%System%\lowsec\user.ds %Windir%\Temp\1.tmp	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709
3	[file and pathname of the sample #1] %System%\sdra64.exe	117,248 bytes	MD5: 0x74AF2BA42786B3CB4D1A6B038219334D SHA-1: 0xCE9F9BE3F49B9EBEE5113010105182ADA8DCB83E

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).
%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

The following directory was created:

%System%\lowsec

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	118,784 bytes
lsass.exe	%System%\lsass.exe	118,784 bytes
svchost.exe	%System%\svchost.exe	118,784 bytes
svchost.exe	%System%\svchost.exe	118,784 bytes
svchost.exe	%System%\svchost.exe	118,784 bytes
svchost.exe	%System%\svchost.exe	118,784 bytes
svchost.exe	%System%\svchost.exe	118,784 bytes
alg.exe	%System%\alg.exe	118,784 bytes
logonui.exe	%System%\logonui.exe	20,480 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{19127AD2-394B-70F5-C650-B97867BAA1F7}
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{334613DB-50C1-B3BE-95ED-E9915A134FF1}
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}
HKEY_USERS\.DEFAULT\Software\Microsoft\Protected Storage System Provider

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Network]

UID = "%ComputerName%_0001BBE8"

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{19127AD2-394B-70F5-C650-B97867BAA1F7}]

{23343233-2C66-3B33-3432-343233343233} = F7 13 F4 0E
{8283A272-4A1B-9944-13E2-5FBE9E6145CF} = 0F 09 F2 0D
{CB7E5F2E-B05E-8192-DE67-1276B78B8359} = 0C 09 F2 0D

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]

ProxyEnable = 0x00000000

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{334613DB-50C1-B3BE-95ED-E9915A134FF1}]

{3039636B-5F3D-6C64-6675-696870667265} = F7 09 F2 0D
{33373039-3132-3864-6B30-303233343434} = 47 09 F2 0D

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}]

{3039636B-5F3D-6C64-6675-696870667265} = F7 09 F2 0D
{33373039-3132-3864-6B30-303233343434} = 47 09 F2 0D

The following Registry Values were modified:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]

Userinit =

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]

Cookies =
History =

Other details

There was registered attempt to establish connection with the remote host. The connection details are:

Remote Host	Port Number
210.51.166.42	80

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

http://natointros.net/zend/cfg.bin
http://natointros.net/zend/gate.php
http://natointros.net/zend/ip.php

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