JAVA_ADWIND.AUSWV

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It does not have any propagation routine.

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 information and reports it to its servers.

Arrival Details

This Trojan arrives as an attachment to the following email messages spammed by other malware/grayware or malicious users:

Installation

This Trojan adds the following folders:

• %User Profile%\muTRJLOWzHy
• %User Profile%\muTRJLOWzHy\GWzhoybRCno <- plugin folder
• %Application Data%\Oracle

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

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

• %User Temp%\OPIUYTUYDGCJVHJBJLK270292836425235605.JAR

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It drops the following file(s)/component(s):

• %User Temp%\m{Random Number}.tmp <- temporary file for _{Random Number}.class
• %User Temp%\_{Random Number}.class <- class to be loaded by main executable JAR
• %User Profile%\muTRJLOWzHy\ID.txt <- contains UUID
• %System%\test.txt <- used to check for admin rights

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It drops and executes the following files:

• %User Profile%\muTRJLOWzHy\xykavqTsiUW.TxkgPG <- main executable JAR
• %User Temp%\Retrive{Random Number}.vbs <- Queries installed firewall and AV products

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It terminates the execution of the copy it initially executed and executes the copy it drops instead.

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
cHookStUYSs = "%Application Data%\Oracle\bin\javaw.exe" -jar "%User Profile%\muTRJLOWzHy\xykavqTsiUW.TxkgPG"

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

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

• Download and Execute Plugins/Files
• Update itself
• Uninstall itself
• Restart Connection

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

• {BLOCKED}.{BLOCKED}.65.32:2180

As of this writing, the said servers are currently inaccessible.

Other Details

This Trojan does the following:

• Copies of files under Java Installation folder to the following folder:
  • %Application Data%\Oracle
• Drops the following file to the %System% folder to check for Admin Rights:
  • %System%\test.txt

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It gathers the following information and reports it to its servers:

• Local IP
• User Name
• Computer Name
• If User is Admin
• OS (Name, Version, Architecture)
• Country
• RAM Size
• Java Version
• If running in VMware or Vbox environment
• Installed Firewall
• Installed AV Products