ThreatExpert Report: Trojan-Spy.Win32.Zbot.gen

Submission Summary:

Submission details:

Submission received: 31 October 2009, 13:59:48
Processing time: 11 min 26 sec
Submitted sample:

File MD5: 0x942D928A7C12B882B85759D4A7CAA0B5
File SHA-1: 0xAE80D777B3CF39729951A34B227E586602E1B3DE
Filesize: 83,456 bytes
Alias: Trojan-Spy.Win32.Zbot.gen [Kaspersky Lab]

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	Alias
1	%System%\lowsec\local.ds	150,765 bytes	MD5: 0xF87E77D3DC2AE31284ABF3050E57EB42 SHA-1: 0xE40DC9DE6D0CA03D2ACD5ECB887701696659805B	(not available)
2	%System%\lowsec\user.ds	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
3	[file and pathname of the sample #1] %System%\sdra64.exe %Windir%\Temp\1.tmp	83,456 bytes	MD5: 0x942D928A7C12B882B85759D4A7CAA0B5 SHA-1: 0xAE80D777B3CF39729951A34B227E586602E1B3DE	Trojan-Spy.Win32.Zbot.gen [Kaspersky Lab]

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	98,304 bytes
lsass.exe	%System%\lsass.exe	98,304 bytes
svchost.exe	%System%\svchost.exe	98,304 bytes
svchost.exe	%System%\svchost.exe	98,304 bytes
svchost.exe	%System%\svchost.exe	98,304 bytes
svchost.exe	%System%\svchost.exe	98,304 bytes
svchost.exe	%System%\svchost.exe	98,304 bytes
alg.exe	%System%\alg.exe	98,304 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\{43BF8CD1-C5D5-2230-7BB2-98F22C2B7DC6}
HKEY_USERS\.DEFAULT\Software\Microsoft\Protected Storage System Provider
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\{334613DB-50C1-B3BE-95ED-E9915A134FF1}

The newly created Registry Values are:

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

UID = "%ComputerName%_0001C697"

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

{23343233-2C66-3B33-3432-343233343233} = F7 11 F4 0E
{FD6391F6-ED0E-0D62-00B1-8AB2FE52F228} = 4B 09 F2 0D
{4F81A701-014C-1846-7CF1-AFB3A13E257D} = 0F 09 F2 0D
{ADB1EA6B-10FB-0085-CEE4-104E4A150B6C} = 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 were registered attempts to establish connection with the remote hosts. The connection details are:

Remote Host	Port Number
163.27.21.8	80
203.81.50.139	80

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

http://student.cmsh.cyc.edu.tw/~spring/anti-wine/theme_html.exe
http://www.kabinaout.net/lagame/statics.php
http://www.infoket.info/images/capcha_cgi.bin
http://ipquery.info/

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