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TROJ_ARTIEF.JI

October 09, 2012
 Analysis by: Jasen Sumalapao
 ALIASES:

Exploit:Win32/CVE-2012-0158 (Microsoft), Exploit.Win32.CVE-2012-0158.a (Kaspersky), Trojan.Script.476951 (Bitdefender), MSOffice/CVE20120158.fam!exploit (Fortinet), Exploit.Win32.CVE-2012-0158 (Ikarus), Win32/Exploit.CVE-2012-0158.G trojan (NOD32)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


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 executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

79,968 bytes

File Type:

RTF

Memory Resident:

No

Initial Samples Received Date:

14 Aug 2012

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 the following component file(s):

  • %User Temp%\PAKISTAN¡¯S NUCLEAR FUTURE.doc

(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.)

It drops and executes the following files:

  • %User Temp%\iexplorer.exe - detected as BKDR_MECTOY.A

(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.)

Dropping Routine

This Trojan executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.

Download Routine

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

  • CVE-2012-0158

Other Details

This Trojan deletes itself after execution.

  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.JI

Step 3

Search and delete this file

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files and folders in the search result.
  • %User Temp%\\PAKISTAN¡¯S NUCLEAR FUTURE.doc

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_ARTIEF.JI. 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 5

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/ms12-027


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