HTML_SWFLOAD.B

May 22, 2014
 Analysis by: Anthony Joe Melgarejo
 Modified by: Mark Joseph Manahan
 ALIASES:

JS/Downloader.Small.AB (AVG) ,Exploit.HTML.CVE-2008-2551 (Ikarus) ,JS/Agent.NMB trojan (Eset)

 PLATFORM:

Windows XP (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 is used to load and execute a file.

  TECHNICAL DETAILS

File Size:

552 bytes

File Type:

HTML, HTM

Initial Samples Received Date:

30 Nov 2013

Payload:

Loads and executes a file

Arrival Details

This Trojan may be downloaded from the following remote sites:

  • http://{BLOCKED}9.{BLOCKED}8.107.129/yy.html
  • http://{BLOCKED}9.{BLOCKED}8.107.121/yy.html
  • http://{BLOCKED}3.{BLOCKED}0.197.29/yy.html
  • http://{BLOCKED}9.{BLOCKED}8.107.107/yy.html
  • http://{BLOCKED}ogyo.org/pop/yy.html
  • http://{BLOCKED}9.{BLOCKED}8.107.105/yy.html
  • http://{BLOCKED}9.{BLOCKED}8.107.104/yy.html

Other Details

This Trojan is used to load and execute the following file:

  • {domain it is hosted}\logo.swf

NOTES:
It only executes on Windows XP platform with either Internet Explorer 7 or Internet Explorer 8.

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.444.07

FIRST VSAPI PATTERN DATE:

30 Nov 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

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as HTML_SWFLOAD.B. 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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