TROJ_DLOADER.OPS

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.

It executes then deletes itself afterward.

It does not have any propagation routine.

It does not have any backdoor routine.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system. As of this writing, the said sites are inaccessible.

It does not have any information-stealing capability.

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 component file(s):

• %User Temp%\{random}.bat - used for deleting itself

(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.)

It executes then deletes itself afterward.

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
ImageView

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
ImageView\Recent File List

HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\
ImageView\Settings

HKEY_CURRENT_USER\Software\{10 random letters}

HKEY_LOCAL_MACHINE\SOFTWARE\{10 random letters}

It adds the following registry entries:

HKEY_CURRENT_USER\Software\{10 random letters}
License = "1480"

HKEY_LOCAL_MACHINE\SOFTWARE\{10 random letters}
License = "1480"

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Download Routine

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

• http://{BLOCKED}-leaf.com/com_phocaguestbook/ajax
• http://{BLOCKED}-leaf.com/com_phocaguestbook/jquery
• http://{BLOCKED}-gimbl.com/b/shoe

It saves the files it downloads using the following names:

• %User Temp%\{random}.tmp
• %User Temp%\UpdateFlashPlayer_{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.)

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

As of this writing, the said sites are inaccessible.

Information Theft

This Trojan does not have any information-stealing capability.

NOTES:

It does not have rootkit capabilities.

It does not exploit any vulnerability.