TROJ_ARTIEF.EBM

August 29, 2013
 Analysis by: Jimelle Monteser
 ALIASES:

Trojan.Mdropper (Norton), RTF/CVE120158 (exact) (FPROT)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

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

  TECHNICAL DETAILS

File Size:

931,229 bytes

File Type:

RTF

Memory Resident:

Yes

Initial Samples Received Date:

28 Aug 2013

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.

Dropping Routine

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

NOTES:

This Trojan drops the following files:

  • %User temp%\{random}.tmp

It also drops and opens the decoy document %User Temp%\cv.doc to trick users into thinking that this Trojan is a normal document.

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.240.07

FIRST VSAPI PATTERN DATE:

27 Aug 2013

VSAPI OPR PATTERN File:

10.241.00

VSAPI OPR PATTERN Date:

27 Aug 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Search and delete these files

[ Learn More ]
There may be some 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%\vc.doc
  • %User Temp%\{random}.tmp

Step 3

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


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