TROJ_ARTIEF.AZ

April 05, 2011
 Analysis by: Erika Mendoza
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan drops and executes files detected by Trend Micro as BKDR_SKYIPOT.Z

It takes advantage of the following software vulnerabilities to drop malicious files:

  • RTF Stack Buffer Overflow Vulnerability (CVE-2010-3333)

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

  TECHNICAL DETAILS

File Size:

115913 bytes

File Type:

DOC

Memory Resident:

No

Initial Samples Received Date:

04 Apr 2011

Payload:

Drops files

Arrival Details

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

It may be downloaded by other malware/grayware/spyware from remote sites.

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

Installation

This Trojan drops and executes the following files:

  • EBWin.exe - detected by Trend Micro as BKDR_SKYIPOT.Z

Dropping Routine

This Trojan takes advantage of the following software vulnerabilities to drop malicious files:

  • RTF Stack Buffer Overflow Vulnerability (CVE-2010-3333)

Other Details

More information on this vulnerability can be found below:

  • http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-3333

  SOLUTION

Minimum Scan Engine:

8.900

Step 1

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

Step 2

Remove malware files dropped/downloaded by TROJ_ARTIEF.AZ

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_ARTIEF.AZ 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 these security patches Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.

NOTES:
http://www.microsoft.com/technet/security/Bulletin/MS10-087.mspx


Did this description help? Tell us how we did.