JAVA_OZNEB.B

This old remote access Trojan (RAT) can be found as attachments to spammed messages related to financial matters.

To get a one-glance comprehensive view of the behavior of this Backdoor, refer to the Threat Diagram shown below.

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information.

It gathers certain information on the affected computer.

Arrival Details

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This backdoor drops the following files:

• %Application Data%\oracle\Desktop.ini

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It drops the following copies of itself into the affected system:

• %Application Data%\oracle\olo.dll

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It creates the following folders:

• %Application Data%\oracle

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

Autostart Technique

This backdoor adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
oracle = "%Application Data%\oracle\olo.dll"

Backdoor Routine

This backdoor executes the following commands from a remote malicious user:

• Capture Screenshot
• Display Messagebox
• Visit URLs
• Download and execute Arbitrary file
• Search IP
• Load Additional Plugins, including Litecoin mining plugin
• Update and Uninstall itself
• Restart and Close connection to server

It connects to the following websites to send and receive information:

• {BLOCKED}k.{BLOCKED}ics.com:1506
• {BLOCKED}k.{BLOCKED}ics.com:1507

Information Theft

This backdoor gathers the following information on the affected computer:

• IP Address
• Hostname
• Operating System
• Memory
• Java Version
• Port Used
• Bot Version