TROJ_ARTIEF.OU

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. 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 exploits software vulnerabilities to automatically execute attachments once a user reads or previews spammed messages. It does this action to allow easy execution of email attachments without the user opening the said attachments.

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

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 Trojan drops and executes the following files:

• %User Temp%\{random filename}.exe - detected as TROJ_DAPATO.EVL

(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.)

Propagation

This Trojan exploits the following software vulnerabilities to automatically execute attachments once a user reads or previews a spammed message:

• CVE-2012-0158

Dropping Routine

This Trojan executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.