JAVA_ADWIND.OQI

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

However, as of this writing, the said sites are inaccessible.

Arrival Details

This Trojan 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 Trojan drops the following copies of itself into the affected system and executes them:

• %User Profile%\5HIKkZlQjY1\lSNAnTkR4kK.5G43BV

(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.)

It drops the following files:

• %User Profile%\5HIKkZlQjY1\ID.txt
• %Windows%\t.txt

(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.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It creates the following folders:

• %User Profile%\5HIKkZlQjY1
• %User Profile%\5HIKkZlQjY1\2L1KFL9TWH6

(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.)

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
HfXs7SUE8PQ = ""%Application Data%\Oracle\bin\javaw.exe" -jar "%User Profile%\5HIKkZlQjY1\lSNAnTkR4kK.5G43BV""

Other Details

This Trojan connects to the following possibly malicious URL:

• {BLOCKED}.{BLOCKED}.203.33

However, as of this writing, the said sites are inaccessible.