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SWF_REDIR.EM

July 07, 2016
 Analysis by: Mar Philip Elaurza
 ALIASES:

Mal/SWFRedir-E (SOPHOS_LITE)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


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

It does not have any propagation routine.

It does not have any backdoor routine.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

16,100 bytes

File Type:

SWF

Memory Resident:

Yes

Initial Samples Received Date:

27 May 2016

Arrival Details

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

This malware arrives via the following means:

  • Component of Angler exploit kit

Propagation

This Trojan does not have any propagation routine.

Backdoor Routine

This Trojan does not have any backdoor routine.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

It does the following:

  • Inserts iframe to redirect the user to this site format:
    • {current site}(3 to 10 random characters).{html, htm, jpeg, png, jpg, gif, or js}
  • Accessing the landing page may result to redirect to another landing page

NOTES:

It does not have rootkit capabilities.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.634.03

FIRST VSAPI PATTERN DATE:

06 Jul 2016

VSAPI OPR PATTERN File:

12.635.00

VSAPI OPR PATTERN Date:

07 Jul 2016

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 SWF_REDIR.EM. 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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