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HTML_EKSPLOYT.AE

January 03, 2013
 Analysis by: Mark Joseph Manahan
 ALIASES:

Bloodhound.Exploit.474 (Symantec), Exp/20124969-A (Sophos), EXP/CVE-2012-4969.B (Antivir)

 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

Infection Channel:

Hosted on websites

This Trojan executes when a user accesses certain websites where it is hosted.

It takes advantage of software vulnerabilities to allow a remote user or malware/grayware to download files.

It takes advantage of certain vulnerabilities.

  TECHNICAL DETAILS

File Size:

1,511 bytes

File Type:

HTML, HTM

Initial Samples Received Date:

19 Sep 2012

Payload:

Downloads files, Compromises system security

Arrival Details

This Trojan executes when a user accesses certain websites where it is hosted.

Download Routine

This Trojan takes advantage of the following software vulnerabilities to allow a remote user or malware/grayware to download files:

  • Internet Explorer 7
  • Internet Explorer 8
  • Internet Explorer 9 (32-Bit Windows NT 6.1 with no Java 1.6 or 1.7 installed)

Other Details

This Trojan takes advantage of the following vulnerabilities:

  • CVE-2012-4969

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.408.01

FIRST VSAPI PATTERN DATE:

19 Sep 2012

VSAPI OPR PATTERN File:

9.409.00

VSAPI OPR PATTERN Date:

20 Sep 2012

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

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as HTML_EKSPLOYT.AE. 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. Internet Explorer (2744842)


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