WORM_KOLAB.SMQX

This worm arrives via removable drives. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It drops copies of itself in removable drives. These dropped copies use the names of the folders located on the said drives for their file names.

It connects to Internet Relay Chat (IRC) servers. It executes commands from a remote malicious user, effectively compromising the affected system.

As of this writing, the said sites are inaccessible.

Arrival Details

This worm arrives via removable drives.

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

• %Application Data%\E-73473-3674-74335\msnrsmsn.exe

(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%\E-73473-3674-74335

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Microsoft MainUpdates = "%Application Data%\E-73473-3674-74335\msnrsmsn.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%\E-73473-3674-74335\msnrsmsn.exe = "%Application Data%\E-73473-3674-74335\msnrsmsn.exe:*:Enabled:Microsoft MainUpdates"

Propagation

This worm drops copies of itself in removable drives. These dropped copies use the names of the folders located on the said drives for their file names.

It sends the following messages via instant-messaging (IM) applications:

・belas fotos nao de voce (Malicious URL)
・vakre bilder fra deg. (Malicious URL)
・hoi niet mooi fotos (Malicious URL)
・ich sag nur geile fotos. (Malicious URL)
・hey, beautiful facebook photos.. (Malicious URL)
・muy hermosas fotos no?? (Malicious URL)
・uh vos facebook photos? (Malicious URL)
・wow le tue foto bellissime (Malicious URL)
・ahoj, dobry den jste na? ... (Malicious URL)
・uh flotte fotos fra dig (Malicious URL)
・uh szep kepek rolad (Malicious URL)
・uhh, ladne zdjecia z was. (Malicious URL)
・Fotograflarinizi?? (Malicious URL)
・uh valokuva ei ole? (Malicious URL)
・woow, imagini frumoase din voi?? (Malicious URL)
・u velmi pekne fotografie od vas?(Malicious URL)
・pekne fotografie od vas? (Malicious URL)
・vackra bilder fran dig (Malicious URL)
・hoj so vase fotografije? (Malicious URL)
・u lepo slike ne? ... (Malicious URL)
・wow, fbphotos. (Malicious URL)

It sends copies of itself to target recipients using the following instant-messaging (IM) applications:

• Yahoo! Messenger

Backdoor Routine

This worm connects to any of the following Internet Relay Chat (IRC) servers:

• {BLOCKED}m.{BLOCKED}ch.ru

It joins any of the following IRC channel(s):

• #biznew#

It executes the following commands from a remote malicious user:

• im
• down
• sort
• erase

Download Routine

This worm connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}hare.com/files/1939491401/msg.exe

It saves the files it downloads using the following names:

• %User Temp%\{random}.exe

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

As of this writing, the said sites are inaccessible.

NOTES:
It may also receive a link where the malware may be downloaded.