Author: Erika Bianca Mendoza   

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVER ALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
Low
Medium
High
Critical

  • Threat Type:
    Trojan

  • Destructiveness:
    No

  • Encrypted:
    No

  • In the wild:
    Yes

  OVERVIEW

INFECTION CHANNEL: Spammed via email

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It may be unknowingly downloaded by a user while visiting malicious websites.

  TECHNICAL DETAILS

File size: 315,392 bytes
File type: DOC
Memory resident: No
INITIAL SAMPLES RECEIVED DATE: 20 września 2011
PAYLOAD: Creates files

Arrival Details

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

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

NOTES:
This is the Trend Micro detection for specially-crafted document files that exploit the following vulnerability:

  • RTF Stack Buffer Overflow Vulnerability (CVE-2010-3333)
If exploit is successful, it creates the following malicious file:
  • %User Temp%\setup.exe - detected by Trend Micro as TROJ_DROPPER.QCY
It also creates and opens the following non-malicious document displaying adult content:
  • %User Temp%\{malware name}.doc
The created binary file is then executed. Thus, the malicious routines of the said file are also exhibited in the system.

  SOLUTION

Minimum scan engine: 9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Remove malware/grayware files dropped/downloaded by TROJ_ARTIEF.SM1

    TROJ_DROPPER.CQY

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_ARTIEF.SM1. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 4

Download and apply this security patch Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors. http://technet.microsoft.com/en-us/security/bulletin/ms10-087


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