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TROJ_ARTIEF.HAL

July 17, 2013
 Analysis by: Rhena Inocencio
 Modified by: Jimelle Monteser
 ALIASES:

Troj/20120158-P (Sophos), RTF/CVE2012015 (FProt), Exploit.Win32.CVE-2012-0158.j (Kaspersky), Exploit:Win32/CVE-2012-0158.CJ (Microsoft), Trojan.Mdropper (Norton)

 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:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • 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:

321,636 bytes

File Type:

DOC

Initial Samples Received Date:

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

  • Microsoft Security Bulletin MS12-027

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

Other Details

More information on this vulnerability can be found below:

NOTES:
Once this Trojan successfully exploits the said vulnerability, it attempts to drop and execute the following malicious file:

  • %User temp%\paw.exe - detected as TSPY_ZBOT.PI

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

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.914.02

FIRST VSAPI PATTERN DATE:

13 May 2013

VSAPI OPR PATTERN File:

9.915.00

VSAPI OPR PATTERN Date:

13 May 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

Remove grayware/spyware files dropped/downloaded by TROJ_ARTIEF.HAL

  • TSPY_ZBOT.PI

Step 3

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

*Note: 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.


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