WORM_GANELP.SMIA

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 uses the Windows Task Scheduler to add a scheduled task that executes the copies it drops.

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.

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 file(s)/component(s):

• %Program Files%\{random}\{random}
• %Windows%\Tasks\Update23.job

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %Windows% is the Windows folder, which is usually C:\Windows.)

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

• %Program Files%\{random}\jusched.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

It uses the Windows Task Scheduler to add a scheduled task that executes the copies it drops.

It creates the following folders:

• %Program Files%\{random}

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)

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
%Program Files%\{random}\jusched.exe = "%Program Files%\{random}\jusched.exe:*:Enabled:JavaUpdate23"

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.

Download Routine

This worm connects to the following URL(s) to download its component file(s):

• {BLOCKED}io_802884.di.{BLOCKED}pic.org
• {BLOCKED}loji.{BLOCKED}-ed.net
• {BLOCKED}tp.{BLOCKED}od.com