WORM_SDBOT.FXB

It sends messages that contain links to sites hosting remote copies of itself using specific instant-messaging (IM) applications.

It opens the TCP 1866 port where it listens for remote commands.

It connects to a URL to send and receive information.

This worm may be downloaded by other malware/grayware/spyware from remote sites. It may be unknowingly downloaded by a user while visiting malicious websites.

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

Arrival Details

This worm may be downloaded by other malware/grayware/spyware from remote sites.

It may be unknowingly downloaded by a user while visiting malicious websites.

Installation

This worm drops the following copies of itself into the affected system:

• %Application Data%\HEX-5823-6893-6818\jutched.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)

It creates the following folders:

• %Application Data%\HEX-5823-6893-6818

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Windows\Profiles\{user name}\Application Data on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Application Data on Windows NT, and C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, XP, and Server 2003.)

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Java Update Manager = "%Application Data%\HEX-5823-6893-6818\jutched.exe"

Other System Modifications

This worm creates the following registry entry(ies) to bypass Windows Firewall:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Application Data%\HEX-5823-6893-6818\jutched.exe = "%Application Data%\HEX-5823-6893-6818\jutched.exe:*:Enabled:Java Update Manager"

Propagation

This worm sends the following messages using the aforementioned Instant Messaging applications:

mira esta fotografia
seen this??
This is the funniest photo ever! %s
olhar para esta foto
Wie findest du das Foto? %s
dette bildet
bekijk deze foto
poglej to fotografijo
pogledaj to slike
titta på denna bild
pozrite sa na túto fotografiu
uita-te la aceasta fotografie
katso tämän kuvaa
bu resmi bakmak
spojrzec na to zdjecie
ser på dette billede
vejte se na mou fotku
guardare quest'immagine
regardez cette photo

It sends messages that contain links to sites hosting remote copies of itself using the following instant-messaging (IM) applications:

• MSN
• GTALK
• ICQ
• PALTALK
• SKYPE
• XFIRE
• YAHOO

Backdoor Routine

This worm opens the following port(s) where it listens for remote commands:

• TCP 1866

It connects to the following URL(s) to send and receive commands from a remote malicious user:

• {BLOCKED}ution.nicaze.net

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